1) The cat humped its back
猫弓起了背。
2) A cat often humps its back.
猫常弓起背部。
3) The cat arched her back in anger.
猫气得拱起了背。
4) A cat arches its back.
猫弓着背。
5) Threw his back out.
他弓起背
6) The cat arches its back when it sees the dog.
猫见到狗拱起背。
补充资料：驼背
1.亦作"駞背"。 2.骆驼的脊背。 3.人的脊柱向后拱起。多由年老脊椎变形和某些疾病引起。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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