landing gear 起落架；起落装置

Airplanes retract their landing gear while in flight for the same reason.

出于同样的原因，飞机在飞行时收回起落架。

Some people are seated on the plane’s landing gear flap.

有些人坐在飞机的起落架襟翼上。

Cling on to紧紧抱住

He had one last hope to cling on to.

他还抱着最后的一线希望。

He managed to cling on to a ledge 40 feet down the rock face.

他设法抓住了岩面下方40英尺处的岩脊。

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