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更新日期:2026-08-14
be dependent on/upon依靠;依赖:The man was out of work and dependent on his son’s earnings.那人失业了,依靠他儿子的收入过活。be firm on one’s legs 站稳:That baby is still not firm on its legs,it is learning walking.那婴儿还不能站稳,他正在学习走路。