风吹掉了树上的叶子.The wind divested the tree of their leaves.屋顶没给你鼻子吹掉就算运气了.It's sheer luck the roof wasn't blown off by your nose.风把桌子上的所有东西连桌布都吹掉了.The wind blew everything off the table, tablecloth and all....

“吹掉”的英语可以翻译为：low off，winnow ...