facing facts or difficulties realistically and with determination
例句
用作形容词 (adj.)
He was a very tough cop and a very fair one. 他是一个非常坚强的警察，同时又是一个非常公正的警察。
My brother thought he was a tough nut but I saw him cry that day. 我哥哥自认为是很坚强的人，但那天我看见他哭了。
A multi-ethnic country taking English as its common language has the tough test of not reducing the relative importance of its mother tongues. 身为一个多元种族国家，以英语作为共同语言有其实际的考量，然而各族母语的价值却相对被贬低了。
美
