释义
a. 强硬的,艰苦的,棘手的,严厉的
例句
1. We won the contract but only through a lot of tough negotiating. 我们赢得了合同，但是却经过了多次不屈不挠的谈判才达到目的。 2. The company faces tough competition. 这家公司面临着艰难的竞争。