释义
a. 脆弱的,虚弱的
例句
1. The frail wooden bridge cracked. 这座不牢固的木桥断裂了。 2. I accept that he's old and frail; be that as it may, he's still a good politician. 我承认他年老体衰，然而尽管如此，他仍是优秀的政治家。
