Undercarriage
n. 底盘, 起落架
📖 牛津释义
undercarriage
(also `landing-gear) n aircraft's landing wheels and theirsupports （飞行器的）起落架
raise/lower the undercarriage 收起[放下]起落架. =>illus at aircraft 见 aircraft 插图.
🗣️ 情景例句
That's good news.
这是个好消息。
Oh? Where were you?
哦，上哪儿去了？
I'm not sure whether I have locked the door.
我没把握是否锁了门。