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。
'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？”
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。
The Jewish Messiah will come from heaven on the day of Judgement and not before the day of judgment.
犹太人的弥赛亚将来自天堂的审判日，而不是前一天的判决。
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。
Before, they might not insure the ones who felt like a high risk or charge them too much, or they would charge them too little and then it would cost the company money.
此前，他们可能不会为那些觉得风险高的人投保或收取他们太多的费用，又或者他们收取的费用太低，然后给公司带来损失。
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。
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。
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。
However, on the second time round, she came upon a low curtain she had not noticed before and behind it was a little door.
然而，在第二次旋转时，她发现了一个自己没有注意到的低帘子，帘子前面和后面有一扇小门。
This second chimpanzee is not a relative of the first chimpanzee, and they've never seen each other before.
第二只黑猩猩不是第一只黑猩猩的亲戚，它们以前也从来没见过面。
Before we discuss the joint practices, let me be clear about what the practices are and are not.
在我们讨论联合实践之前，让我先明确一下什么是实践，什么不是实践。
His legs did not seem as strong as they had seemed the year before, but he moved, straight and proud, toward the tradition that he was building.
他的双腿似乎不像一年前那么强壮了，但他笔直而骄傲地朝他正在建立的传统前进。
Bridget O'Hanlon and her husband, who live in Cleveland, decided before their daughter was born that they would not post her photos online.
布里吉特·奥汉伦和她住在克利夫兰的丈夫在女儿出生前决定不把她的照片发到网上。
In it, a mother is asked to interact with her child in a normal way before putting on a blank expression and not giving them any visual social feedback.
实验中，一位母亲被要求以正常的方式与她的孩子互动，然后面无表情，不给他们任何视觉上的社交反馈。
Some fish do not spawn until maturity. If you catch them before that and you've no baby fish produced for the next year.
有些鱼要到成熟期才产卵。如果你在成熟期之前就开始捕捞，那么你明年就没有鱼籽了。
The first thing every bank will do is study how much money I have and how much debt I have before they decide whether or not to lend me any more money.
每个银行要做的第一件事就是研究我有多少钱，我有多少债务，然后再决定是否再借钱给我。
Climbing further, with renewed courage, he at last saw his goal before him, but not without long and weary exertion.
他又重新鼓起勇气，继续往上爬，他终于看到了眼前的目标，但还需要经过漫长而疲惫的努力才能到达。
Tom's real Barlow was out at once, and he had not dug four inches before he struck wood.
汤姆马上拿出他正宗的巴罗刀，还没挖到四英寸深就碰到了木头。
The most important thing is to start studying a few weeks before the exams and not leave it until the night before!
最重要的是在考试的前几周开始学习，不要都拖到考试前一天晚上！
It's not so good as before. Both the air and the water are badly polluted.
不像以前那么好了。空气和水都被严重污染了。
Jane was not a confident girl before, because she was fat and others often laughed at her.
简以前不是一个自信的女孩，因为她很胖，别人经常嘲笑她。
Whether we like the subject of history or not, we must understand the importance of the events and the people who came before us.
不管我们喜不喜欢历史这个主题，我们都必须了解历史事件和历史人物的重要性。
They say that before the age of 7 children do not have a sense of time and place in their memories.
他们说，孩子在7岁之前的记忆中没有时间和地点的概念。
They say that before the age of 7 children do not have a sense of time and place in their memories.
他们说，孩子在7岁之前的记忆中没有时间和地点的概念。
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