驾驶员发现飞机的起落架不能缩回。
The pilot found that the undercarriage could not be retracted.
为了有效避免载荷过大，现代飞机的起落架都装有缓冲系统。
Shock absorption system is equipped on the modern aircraft landing gear to alleviate heavy load efficiently.
我曾听说有一个人从飞机上掉下来，却刚刚握著飞机的起落架。
I once heard of a man who fell out of a plane but then managed to grab onto the undercarriage.
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