The reason why many seeds require a period of stratification is to guarantee that the seeds grow after and not before unfavorable weather.
许多种子需要一段时间分层的原因是为了保证种子在恶劣的天气来临之后而不是之前生长。
Good news at last, it seems, and not before time.
最后，这貌似是个好消息，但在不恰当的时机却非也。
Why do you want to get more healthy now and not before in your life?
你为什么现在想要变得更健康而过去却未考虑？
'And not before time,' she said. 'My dear Prudence, do you need any money?'
“来得正是时候，”她说，“亲爱的布吕丹丝，您要钱用吗？”
Once they agree that it is correct it is time to move into action... and not before.
只有他们认同约定的内容都正确，这才算到了投入行动的时候。
That is all waiting to come out as and when the right opportunity presents itself, and not before.
所有那些都在等待著出现，不论是以什么方式和什么时候，只要正确的时机到来，而不是在它之前。
Dare any of you, having a matter against another, go to law before the unjust, and not before the saints?
你们中间有彼此相争的事，怎敢在不义的人面前求审，不在圣徒面前求审呢。
Armed with XDebug metrics — and not before — you can optimize your code to tweak algorithms, reduce bottlenecks, and relieve excessive memory use.
拥有了XDebug度量之后——而不是之前——您可以优化代码来调整算法、减少瓶颈并减轻过多的内存使用。
Good news at last, it seems, and not before time: sterling is beginning to lose a bit of its competitive edge against the euro as Europe's troubles pile up.
最后，这貌似是个好消息，但在不恰当的时机却非也。英镑开始对欧元失去了些许的竞争优势，因为欧洲的麻烦也应接不暇了。
Essential goods from outside the district had become more readily available at the market, and prices did not fluctuate as much as they had done before.
区外的必需品在市场上更容易买到，而且价格也不像以前那样大起大落。
A month before my first marathon, one of my ankles was injured and this meant not running for two weeks, leaving me only two weeks to train.
在我第一次参加马拉松比赛的前一个月，我的一只脚踝受伤了，这意味着两个星期不能跑步，只剩两个星期的训练时间。
We can do things that were not possible before, and they can be done simply.
我们现在可以做以前不可能的事情，而且可以轻而易举地做成。
He'd never been in a class before and he was not even sure that he should have been teaching.
他以前从未讲过课，他甚至不能确定自己是否应当从事教学。
Mary had not noticed it before, but she looked up and saw it.
玛丽以前没有注意到，现在她一抬头就看到了它。
You do not understand the story, the background, what happened before, and what happens next.
你不了解这个故事、其背景、之前发生了什么以及接下来会发生什么。
She has the courage to try again, to open her hearts, and to know that not everyone is the same kind of people as before.
她有勇气再试一次，敞开心扉，去了解不是每个人都和以前一样。
She had not known before that this was one of the things which made her feel sour and cross.
她以前不知道这是使她感到酸楚和生气的事情之一。
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