成天受嘲讽是很令人泄气的.It's very discouraging to be sneered at all the time.上座人数一直持续下降，使得戏剧导演产生悲观泄气的情绪。Attendance figures had been steadily dropping, creating a mood of doom and discouragement among theatre directors.令人泄气的环境对...
Underwater baseplate installation in advance is needed for semi - submersible platform pre - drilling well.半潜式平台预钻井,需要预先安装水下基盘.The baseplate locates outside the handle, and has the rotary connection with handle through t...
熔岩沿火山坡面涌流而下.The lava flowed down the sides of the volcano.岩浆就会从火山口缓缓涌流出来。The lava will just ooze gently out of the crater.但是这种方法难以抑制涌流中的高频分量.However, these methods can't suppress the frequency component in the surge...