With the countdown nearing the 30-second mark, the launch had to be delayed briefly to investigate whether a vent arm had properly retracted, which it had.

随着倒计时靠近30秒的节点，发射不得不被延后去调查一只蒸汽臂是否已经被收回，事实上已经收回了。

youdao

With the countdown nearing the 30-second mark, the launch had to be delayed briefly to investigate whether a vent arm had properly retracted, which it had.

随着倒计时靠近30秒的节点，发射不得不被延后去调查一只蒸汽臂是否已经被收回，事实上已经收回了。

youdao