n.贫瘠；无脂肪；贫弱
Hope is a slender reed for a stout man to lean on. 希望是壮汉依靠的一根纤细的芦苇。
The little girl only eats lean pork. 这个小女孩只吃瘦肉。
I am afraid he is too lean to endure it. 我担心他太瘦，承受不住它。
Don't always lean on others for help. 不要老是依靠别人的帮助。
Sit up, children! Don't lean over the table! 坐直，孩子们，不要趴在桌子上！
If you lean over the wall. you will see the river. 如果你伏在墙上望出去，就会看到那条河。
n.清洁；洁白
