1.
Energy: Converting the motion of the sea into electricity requires a trade-off between efficiency and resilience- or does it?
能源：海洋的动能转变为电能时效率和弹性不可兼得——非如此不可吗？
2.
It is always necessary to subdue your allies
非逼得同盟者就范不可，历来如此。
3.
Of course it should, otherwise mistakes will be inevitable.
也应该如此嘛，否则非犯错误不可。
4.
In such an exigence my uncle's advice and assistance would be everything in the world.
情况如此紧急，非请舅父前来协助指点不可。
5.
But this state of affairs is not necessarily permanent, nor is it a matter of principle.
不过这种情况不一定非永远如此不可，也不成为一种原则。
6.
So she could be friendly to other people if she wished, but she could also be ruthless, because she knew that otherwise she could not survive in the society she lived in.
她可以很和气，也可以很毒辣，她知道非如此不能在这个世界上活着。
7.
Such indiscretion cannot be pardoned.
如此轻率是不可原谅的。
8.
It is not always like that, but on average it probably is.
事情并非总是如此，但一般而言可能如此。
9.
Nobody's imagination had gone so far.
谁也不致于如此想入非非。
10.
As the poet Tao Yuanming wrote: "Riches and honor are not my wish, nor is a celestial abode ."I also subscribe to this philosophy.
正如陶渊明先生说的，“富贵非吾愿，帝乡不可期”，我也有此意。
11.
an exceedingly insular man; so deeply private as to seem inaccessible to the scrutiny of a novelist- Leonard Michaels.
一个非常孤立的人；如此隐秘似乎不可能被小说家详细调查。
12.
Do not eat grapefruit or drink grapefruit juice unless your doctor instructs you otherwise.
不要食用葡萄柚可饮用葡萄柚汁，除非医生如此指示您。
13.
If I may say so, it is actually not the case.
如果我可以这么说的话，实际上情况并非如此。
14.
It would be convenient if the facts square with the theory, but they do not.
如果事实与理论相符那就好了, 可惜并非如此。
15.
If not, then does it really matter if she loves you back or not?
若非如此，那她若不爱你是否有关系？
16.
Is that the case ? No, that' s not the case.
事实是那样吗?不,事实并非如此。
17.
FA: No, no, not at all. Only the Spanish people.
费尔南多：不，并非如此。只有西班牙人。
18.
It would be convenient if the facts squared with the theory,but they don't.
如果事实与理论相符,那就好了,不过并非如此。