门铃响了，正好给了Michael一个必需的休息间隙，他打开了门，是个送比萨饼的女孩。

The doorbell rings, giving Michael a much needed break from the project. He opens the door for a delivery girl.

youdao

因此，准确测量发动机的篦齿间隙在航空发动机研发、改进、制造以及维护的过程中是十分必要也是必需的。

Therefore, the accurate measurement of the labyrinth gap of aeroengine is very necessary and required in the process of research, improvement, maintenance and manufacturing.

youdao

所以，在航空发动机研发、改进、制造以及维护的过程中，准确测量发动机篦齿间隙是十分必要也是必需的。

So it is necessary to accurately measure the clearance of labyrinth in the process of devising, ameliorating, producing and maintaining engines.

youdao

所以，在航空发动机研发、改进、制造以及维护的过程中，准确测量发动机篦齿间隙是十分必要也是必需的。

So it is necessary to accurately measure the clearance of labyrinth in the process of devising, ameliorating, producing and maintaining engines.

youdao