他在他的合同里有一项条款保证他享有一定比例的利润。

He has a clause in his contract which entitles him to a percentage of the profits.

《柯林斯英汉双解大词典》

这种方法有一定的新意。

There's a certain novelty value in this approach.

《牛津词典》

从感染艾滋病病毒到发展成为艾滋病病人有一定的时间间隔。

There's a time lag between infection with HIV and developing AIDS.

《柯林斯英汉双解大词典》

But when you solve the Schrodingerequation, you don't get just a set of solutions that are dependent upon one number.

但当你解薛定谔的方程式时，你没得到有一个统一答案的,一系列解决方法。

麻省理工公开课 - 固态化学导论课程节选

We would think that Milton's contemporaries might be aghast that such a sympathetic portrait of Satan could be used at the beginning of the poem.

我们很可能以为，与弥尔顿同时代的人,看到本诗开头就对撒旦有如此具体系统的描述,定会感到惊骇。

耶鲁公开课 - 弥尔顿课程节选

The second thing is, just as in the case of the violin string, the wave equation, as posed by Schrodinger, has a plurality of solutions.

第二，就那个小提琴弦而言，波动方程，被薛定谔所提出的，有许多解法。

麻省理工公开课 - 固态化学导论课程节选