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There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
The tail exhaust pipe of the motor vehicle emitted poisonous smoke. 机动车的尾部排气管排出有毒的浓烟。
Be modest, otherwise you will lag behind. 要谦虚，否则就要落后。
There is a time lag of about 10 years. 有大约十年时间的间歇。
I felt completely disorientated with the jet lag. 我乘长途飞机後因生理节奏失调而感到昏昏沉沉的。
exhaust lag 排气滞后
The children always lag behind when we go for a walk. 我们出去散步时，孩子们总是落在后面。
The exhaust valve on my car have burn out three times. 我车子上的排气阀已烧坏三次。
If your payments of rent lag behind, you will be asked to leave. 你要是不能按时付房租，就要请你搬家。
Exhaust gas has been incriminated in air pollution in cities. 废气已过视为城市空气污染的原因。
The exhaust valve on my car has burnt out three times. 我车子上的排气阀已烧坏三次。
Something has gone wrong with the car's exhaust system. 汽车的排气系统出了故障。
Effective measures have been taken to prevent exhaust pollution. 业已采取有效措施以防止废气污染。
You'll lag behind unless you study harder. 你如不更加努力地学习就要掉队。
Let not a single classmate lag behind. 不要让一个同学掉队。
Some of the runner in the race begin to lag. 参加比赛的运动员中有一些开始落后了。
Increasing the total time lag is destabilizing. 增加总时滞将使稳定性降低。
In the sub-zero weather, their exhaust plumb white in the grey street. 在严寒天气，他们的排气管在灰色的街道上吐著缕缕白烟。
We still lag behind in this respect. 在这方面，我们还比较落后。
It is difficult to exhaust much mass in this form! 要使这种形式的喷出物质量很大是有困难的。