您要查找的是不是：
- 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。
- 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。
- Have you turned off the water valve? 你关掉水阀了吗？
- We need an eye bolt to fit this valve. 我们需要一个有眼螺栓来固定这个阀门。
- 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。
- He soon detected the faulty valve. 他很快查到了出毛病的阀门。
- 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。
- 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。
- The pump sucks air out (of the vessel) through this valve. 这台泵通过这个阀门把(容器中的)空气抽出。
- 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。
- The exhaust valve on my car have burn out three times. 我车子上的排气阀已烧坏三次。
- We still lag behind in this respect. 在这方面，我们还比较落后。
- The exhaust valve on my car has burnt out three times. 我车子上的排气阀已烧坏三次。
- valve lag 活门迟关,阀迟关
- They do not like to lag behind the others. 他们不愿意落在人后。
- To fail to keep up a pace; lag behind. 落后跟不上步伐；落后
