Children need enough practice before they can be helpful.
孩子们需要足够的练习才能起到帮助作用。
The mineral elements from the soil that are usable by the plant must be dissolved in the soil solution before they can be taken into the root.
土壤中对植物有用的矿物质元素必须先溶解在土壤溶液中，然后才能被根吸收。
Packaging - Applications must first be packaged before they can be used.
打包——应用在使用之前必须先被打包。
Some STDs, such as HIV, can take up to 6 months before they can be detected in the blood.
一些性传播疾病像HIV在血液存在6个月后才能被检查出来。
When all the data sets are created, they must be added to the project before they can be used.
创建了所有数据集后，必须将它们添加到项目中才能使用。
The toys have to meet strict/ tough safety requirements before they can be sold to children.
这些玩具比得在达到严格的安全要求后才可出售给儿童。
But the cost of holding deposits is the need to convert them into cash before they can be spent.
但是在出现销售现场电子转帐系统之前，为此要付出的代价是必须先要把存款变成现金才能用来购物。
Finally, certain imported products face burdensome requirements before they can be distributed in China.
最后，某些进口产品在中国获准分销之前要经过繁缛的手续。
For instance, Thai characters must be sorted, composited, and re-ordered before they can be rendered.
例如，泰国语在显示之前，必须进行排序、合成和重新排序。
The team warns in the journal PLoS Biology that many species will become extinct before they can be studied.
研究团队在《公共科学图书馆·生物学》(PLoS Biology)中警告说，许多物种会在得到研究前灭绝。
Something further must be done to the amplified signals before they can be sent to the transmitting antenna.
对于放大了的信号，必须作进一步的处理后，才能把它们馈送到发射天线上去。
As in past releases, some of these new features require configuration by an administrator before they can be used.
如以上的版本一样，有一些新特性在可以投入使用之前，由管理员来进行一番配置。
Banks will have to look relatively risk-proof before they can be passed back into private ownership at a profit.
银行将不得不为重获利润自主的私人所有权而寻找相关风险证明。
Such assets are considered partial implementations, but require additional elements before they can be instantiated.
这样的资产考虑过部分的实现，但是在它们被例示之前需要额外的元素。
If your estate gets paid directly, the true beneficiaries will be in for a long wait before they can be paid anything.
如果你的资产是一次性直接交付的，那这个真正的受益人在得到财产之前会等待很长时间。
Some of Madagascar's endemic species have never even been recorded, and will likely be lost before they can be studied.
甚至一些马达加斯加当地的物种并没有留下任何记录，估计还没有来得及被研究就已经灭绝了。
The tiny, delicate skeletons are usually scattered by scavengers or destroyed by weathering before they can be fossilized.
微小纤细的骨骼通常在石化前就被食腐肉的动物拆散了，或者被风化作用破坏掉了。
If you are restricting the packets on this level, they do not need to be even delivered to your VM before they can be discarded.
如果想要把这些包限制在这个级别，那么在它们被丢弃前，它们甚至无需被发到VM。
He points out that conventional medicines must be shown to be both safe and efficacious before they can be licensed for sale.
他指出传统药品必须在确保安全和有效后才能许可出售。
The logic is there to create conceptual user interfaces, but the transactions will have to be reversed before they can be applied.
这儿的逻辑是创建概念上的用户接口，但是事务处理将不得不在应用之前被逆转。
In the past he has often got off thanks to Italy's generous provision for "timing out" legal proceedings before they can be concluded.
由于意大利法律诉讼中在得出结论之前有暂停的规定，过去他总能免于处罚。
These are sometimes growers but are often traders who for a fee promise to supply for a fixed price before they can be sure a crop is ready.
这种交易方式有时用于农业主不过更多时候是贸易商采取这样的方式，来保证供应的庄稼已经成熟且能以固定的价格买进。
Inspection. Out of storage to charge. Free storage time is only 10 days. Need to upload the identity documents before they can be transferred.
验货。出入库也要收费。免费仓储时间只有10天。需要上传身份证件才可转。
Several stages of cooling are needed to slow them down before they can be trapped, forming a matchstick-sized cloud of around 30,000 particles.
需要分阶段冷却才能将其运动速度降低，然后进行捕获，形成一个由大约3万个反质子组成的火柴棍那么粗的一个粒子云团。
Several stages of cooling are needed to slow them down before they can be trapped, forming a matchstick-sized cloud of around 30, 000 particles.
需要分阶段冷却才能将其运动速度降低，然后进行捕获，形成一个由大约3万个反质子组成的火柴棍那么粗的一个粒子云团。
People think that they must have these things before they can be happy, but Scott Achor in "the Happiness Advantage" says that the opposite is true.
人们认为他们必须拥有这些东西后才会开心，但斯科特·阿克尔在髧“幸福的优势”中说反过来也是正确的。
Temporary tables must be declared before they can be referenced. The following SQL procedure (created from the command line) demonstrates the process.
临时表在进行引用之前必须先声明。
Temporary tables must be declared before they can be referenced. The following SQL procedure (created from the command line) demonstrates the process.
临时表在进行引用之前必须先声明。
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