一定: fixed; established; regular必定: be bound to; be sure to; cer ...当然: as it should be; only natura ...当然,必定: by all means必定, 一定: to a certainty必定,一定: be bound to一定,必定: be sure to do; be sure to(do)当然,一定: you bet必定: be bound to; be sure to; certainly; undoubtedly 反动派必定失败。 reactionaries are bound to fail. 那是必定要发生的。 it will happen, as sure as a gun. 我们坚信我们的正义事业必定胜利。 we firmly believe that our just cause will succeed尽一切办法, 一定, 务必, 好的, 当然可以: by all manner of means当然: 1.(应当这样) as it should be; only natural 理所当然。 that's just as it should be.; that's only natural.2.(合情合理) without doubt; certainly; of course; be sure 你当然可以用我的字典了。 you can certainly use my dictionary. 同志有困难当然要帮助。 it goes without saying that we should help a comrade in difficulty.3.(理所应当的) natural 当然同盟军 natural ally; 当然继承 [法律] natural succession; 当然继承人 [法律] heir apparent; natural heir一定: 1.(规定的, 确定的) fixed; established; regular 一定的规章制度 established rules and regulations; 一定的生产指标 fixed production quota; 按照一定的规格进行生产 work according to specifications; 学习、 工作都有一定的时间。 there are fixed times for study and for work.2.(固定不变的) definite; constant 每一种弹簧都有一定的弹性。 every sort of spring has a definite elasticity.3.(必定) surely; certainly; be bound to; necessarily 这一定是他想买的书。 this must be the book he wants to buy. 只要我们做到这一切, 改革就一定能成功。 provided we do all this, we shall assuredly succeed in our reform. 六点以前, 我一定回家。 i shall definitely be home before six o'clock.4.(特定的) certain; specific; given 在一定程度上 to a certain degree; 在一定条件下 under given conditions; 在一定意义上 in a certain sense; 在一定的时期内 within a certain [definite] period; 金属加热到一定的温度都会熔化。 metals will melt when heated to a certain temperature.5.(相当的) proper; fair; due 达到一定水平 reach a fairly high level; 给予一定的重视 attach due importance to必定,必须: be bound to必定,务必: without fail必定,肯定: be bound to必定的: since you have signed your name on the contract youare now bound to keeit必定地: inevitably必然,必定: necessarily潘必定: pempidine无疑,必定: no doubt注定,必定: be bound to必定基因: obligatory gene; operator gene必定将死: having to die必定落空: if you sell the cow you sell her milk too必定遭到, 参加: be in for