她多少已经预料到他会中途就退出这门课程。She'd half expected him to withdraw from the course.是这样，不过别忘了他们错过了多少天伦之乐。Ah yes, but think of all the family life they're missing.现在还不知道有多少人在枪林弹雨中身亡。It's still not known how many died i...
发动机气门的二种型式是:进气口和排气口.The two types of engine valves are intake and exhaust.同时,外面空气由进气口吸入代替被排出的空气.At the same time air is sucked into the inlet to replace the exhausted air.两侧进气口的水平烤架并纳入令人印象深刻的雾灯.Both side inlets have hori...