optician [ 'ɔptiʃən ] n. 光学仪器商,眼镜商,光学仪器制造厂 e.g. 1. The optician said I needed new glasses. 验光师说我需要配新眼镜.
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optics [ 'ɔptiks ] n. 光学 e.g. 1. He is well versed in the science of optics. 他精通光学。
2. The optic theory originated with Einstein. 光学理论是爱因斯坦首创的。
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optimal [ 'ɔptiməl ] a. 最佳的,最理想的 e.g. 1. The ergonomics of the new office were felt to be optimal. 新办公室工效设计因素感觉十分理想
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optimism [ 'ɔptimizəm ] n.&a. 乐观,乐观主义 e.g. 1. Pessimism, when you get used to it, is just as agreeable as optimism. 悲观主义者,当你习惯它之后,就和乐观主义者一样令人惬意了。
2. They professed optimism about the outcome. 他们对结果表示乐观.
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optimist [ 'ɔptimist ] n. 乐观主义者 e.g. 1. The man who is a pessimist before forty-eight knows too much; the man who is an optimist after forty-eight knows too little. 未逾四十八岁的悲观主义者,是知道得太多之人;而年逾四十八岁的乐观主义者,是知道得太少之人。
2. An incurable optimist; an incurable smoker. 坚定不移的乐观主义者;不可救药的烟民
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optimistic [ ˌɔpti'mistik ] a. 乐观的,乐观主义的 e.g. 1. A person regarded as being foolishly or blindly optimistic. 过分乐观者,盲目乐观者被视为愚蠢地或盲目地乐观的人
2. We are still optimistic, whatever the result (may be). 我们仍然乐观,不论结果如何。
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optimization [ ˌɔptimai'zeiʃən ] 优化
n. 最佳化 e.g. 1. It also incorporate new optimization specific to particular server and local database format. 它也把新的优化细节合并到特殊服务器与本地数据库格式中。
2. An equation or inequality relating the variables in an optimization problem. 在优化问题中,一种表示若干变量相互关系的方程(式)或不等式。
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optimize [ 'ɔptimaiz ] v. 使...完美,乐观,使...完善
v.优化 e.g.
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optimum [ 'ɔptiməm ] n. 最适宜
a. 最适宜的 e.g. 1. Most favorable or desirable; optimum. 最理想的最适宜的,最令人满意的,最优的
2. The market offer optimum condition for sale. 市场为销售提供了最佳条件。
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option [ 'ɔpʃən ] n. 选择 e.g. 1. Don't take the job now keep your options open until you leave university. 先别接受这份工作--暂时保留选择权,到离开这所大学再说。
2. The former option favours the married man. 前一种选择对已婚男子有利.
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optional [ 'ɔpʃənəl ] a. 可以任选的,非强制的 e.g. 1. The insurance cover is optional. 保险范围可以随意选择。
2. A4-speed automatic transmission is optional. 四段自动变速器是可自由选择的。
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optionally [ 'ɔpʃənəli ] ad. 可选择地 e.g.
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or [ ɔ:,ə ] conj. 或者,还是
prep.&ad. 或者 e.g. 1. I don't care whether I get it or not. 我不在乎我是否可以得到它。
2. Hurry up or else you'll be late. 快,否则你就要来不及了。
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oral [ 'ɔ:rəl ] a. 口头的
n. 口试 e.g. 1. He will take an oral examination. 他将接受口试。
2. The old man told us a story passed on by oral tradition. 老人给我们讲述了一个口头流传的故事。
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orange [ 'ɔrindʒ ] a. 橙色的
n. 橘子 e.g. 1. There are some oranges on the table. 桌子上有几个橘子。
2. The burning coals started to flame yellow and orange. 燃烧著的煤开始发出了黄色与橙色的火焰.
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orbit [ 'ɔ:bit ] n. 轨道,常轨,眼眶
v. 绕轨道而行,进入轨道,盘旋 e.g. 1. The spacecraft is in orbit around the moon. 该航天器在绕月球轨道运行。
2. How many spacecrafts are orbiting the moon? 有多少航天器绕月球轨道飞行?
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orchard [ 'ɔ:tʃəd ] n. 果园 e.g. 1. My uncle has an apple orchard. 我叔叔拥有一个苹果园。
2. She ran hither and thither in the orchard. 她在果园里到处跑。
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orchestra [ 'ɔ:kistrə, -kes- ] n. 管弦乐队 e.g. 1. An orchestra usually plays classical music. 管弦乐队通常演奏古典音乐。
2. Our artistic director was instrumental in persuading the orchestra to come. 我们的艺术指导帮助请来管弦乐队。
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ordeal [ ɔ:'di:l, -'di:əl ] n. 严酷的考验,痛苦的经验 e.g. 1. His courage was severely tried by his ordeal. 他的勇气在艰难困苦中经受了严峻的考验。
2. She maintained her equanimity throughout her long ordeal. 她在长期的苦难中心情一直都很平静.
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order [ 'ɔ:də ] n.订单,命令
n. 顺序,整齐,勋章,阶级,决议
vt.命令,调整,定购 e.g. 1. The items are listed in order of importance. 这些项目是根据其重要性排列的。
2. The boss ordered that the work should be done on time. 老板吩咐工作必须按时完成。
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