N-COUNT A hunchback is someone who has a large lump on their back because their spine is curved. 驼背的人 [侮辱，老式]
I had a hunch (that) you'd be back.
我有预感你会回来。
First, it forces you to hunch over, an inefficient running form that can lead to neck, shoulder, and back pain.
第一，这迫使你弓着腰，一个没有效率的跑步方式能导致脖子，肩膀，和背部疼痛。
People tend to "slouch" or "hunch" over in their seats which puts a lot of strain on their back.
人们倾向于在座位上“懒坐”或“弓坐”，这样给后背造成了很大压力。
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