一旦

We are firmly convinced, and we act on that conviction, that with nations, as with individuals, our interests soundly calculated, will ever be found inseparable from our moral duties; and history bears witness to the fact, that a just nation is taken on its word, when recourse is had to armaments and wars to bridle others.

我们抱有一个坚定的信念，并以此作为行动的指南——国与国的关系如同人与人的交往一样，我们那些经过仔细推敲才确定的利益，从来都不能与我们的道义责任相分离；而且历史事实也证明，一个正义之邦一旦不得不借助武力和战争来制服他人，其言辞也就必定是可堪信任的。

Once a novelist gets started, he will be obsessed and possessed by his characters; besides, none of the writing manuals will do him any good.

小说创作是一种非社会行为，一旦动笔，小说家会时刻为小说中的人物所困扰；而且，真正写起来，小说指南一类书籍并不管用。

Although your mind functions marvelously,it will be completely out of order if you are in great tension.

大脑的奇妙之处很多，但一旦太过紧张就会失灵！

When the factory closes, it will mean 500 workers will be out of work.

工厂一旦关闭，那就意味着要有500工人失业。

Once you fall in his trap, it will be not easy to get rid of it.

一旦落入他的圈套，要想摆脱就不那么容易了。

If you fall into his trap, it will be difficult to get rid of.

一旦落入他的圈套，要想摆脱就不那么容易了。

They could be sentenced to death if convicted .

一旦被判有罪，他们可能会被判处死刑。

We may put it the other way by saying that the physical sciences can be more liberal because we are sure that foolish opinions will be readily eliminated by the shock of facts.

自然科学得情况则不一样，自然科学要开放得多，因为，一旦受到事实的冲击，那些愚蠢的观点马上会消失得无影无踪。

And I know you will be shocked at how quickly the results flow once you take advantage of the loophole.

我知道，你会惊讶于如何快速流动的结果，一旦你利用漏洞。

Iterators can often be substituted for conventional loops, and once you get used to them, they are generally easier to deal with.

迭代器通常可以方便的代替传统的循环，一旦你用了它们，它们通常是容易处理的。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷