1.
Studies on the Metabolizable Energy and Crude Protein Requirements For Maintenance in Layer ducks;
蛋鸭休产期代谢能和蛋白质维持需要量研究
2.
We need oxygen to support life.
我们需要氧气维持生命。
3.
air is necessary to support life.
维持生命需要空气。
4.
the amount of energy required to maintain the body of an individual in a resting state.
维持个体保持静止状态所需要的能量。
5.
Maintaining the repositories requires effort and discipline.
维持这些仓库需要（共同）努力和纪律。
6.
suBsistence diet
维持生命所需要的最小限度食物
7.
The factory is in great demand of steel to keep up production
那个工厂需要大量钢铁以维持生产。
8.
But maintaining any relationship requires commitment and candor.
但是，维持任何关系都需要承诺和坦诚。
9.
And any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
这种知识不能保持那种维持生命所需要的温度。
10.
"To preserve a friend three things are required: to honour him present, praise him absent, and assist him in his necessities"
维持友谊需要三点∶当面尊重他,背后赞扬他,需要时帮助他
11.
To preserve a friend, three things are required: to honor him when present, praise him when absent, and assist him in his necessities.
维持友谊需要三点；当面尊重他，背后赞扬地，需要时帮助他。
12.
Need to maintain. Go to the jukebox. Put something on. Anything.
需要维持。 去自动点唱机。 放某事在之上。 任何事。
13.
The urban homeless are often in desperate need of sustenance.
城市里无家可归的人极其需要食物来维持生命。
14.
This newspaper thinks the verdict should stand, but the punishment should not.
本刊认为，判决应该维持，但惩罚方式需要改变。
15.
Many have questioned the need for us to maintain a fixed exchange rate policy.
很多人质疑我们是否需要维持固定汇率政策。
16.
it's a universal necessity for relationships and for your own health and sanity.
而是一种维持良好关系、保持身心健康的普遍需要。
17.
Military experts reckoned that it would take at least 20,000 troops to impose order on central Somalia.
军事专家认为，在索马里中部维持秩序至少需要20000名维和士兵。
18.
Just as a factory requires a complete set of machinery to proceed with production, so does a foreign-trade firm need extensive business con-nections to maintain or expand its business activities.
正如工厂从事生产需要一整套机器，外贸公司要维持或扩大业务就需要广泛的商务关系。