保持

The vessel contains a certain amount of gas to be kept at a constant temperature.

容器中装有一定数量的气体，这些气体的温度保持不变。

The huge spring is very unique, for it is neither too cold nor too hot, with a constant temperature of about 20 degrees centigrade.

这里的巨泉很独特，因为它既不太冷，也不太热，常年温度保持在20摄氏度左右。

The first one uses a water cooling circuit to maintain the bottom at a constant temperature.

第一次使用了冷却水电路保持底部恒温。

To cause to move by means of a current of air .

他们在吹这种风的情况下，换成逆帆来保持既定航线。

A boiler in which the milled coal is maintained in suspension by a rising current of air during combustion.

煤粒在燃烧过程中由上升的气流保持悬浮状态的锅炉。

In front of the A/D converter in an analog conversion system is usually located a sample-and-hold circuit.

在模拟量转换系统中在模/数转换器的前端通常都会有一个采样-保持电路。

But sustaining that momentum has been difficult."It is a challenge to keep people engaged," said Lhadon Tethong, executive director of Students for a Free Tibet, which operates on a budget of about $400,000 a year from a ramshackle office above a dry cleaners in New York's Alphabet City.

不过保持这种势头遇到了困难，"维持人们投入期间是一种挑战，"自由西藏学生运动的执行主任Lhadon Tethong说，这个组织位于纽约字母城一家干洗店楼上粗陋的办公室内，他们一年营运的预算大约40万美元。

If you have a house full of children and rubbish, you will never keep it clean.

如果你有一所房子的儿童和垃圾充分，你永远保持干净。

In aword,it is a good kind of sport which can help us to keep healthy.

一句话，这是可以保持健康的好的运动。

As crop decrease, fishing obtains the change of breed, the economic benefits of ocean catching line of business is sure be affected, how to fall in crop reductive circumstance, maintain marine fishery economy to grow continuously, this is an a Gordian knot.

随着产量的减少，渔获品种的变化，海洋捕捞业的经济效益必定受到影响，如何在产量减少的情况下，保持海洋渔业经济持续增长，这是一个棘手的问题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。