提示：点击例句中的单词，就可以看到词义解释

Learning to speak has been maloney 's toughest challenge .

重新学习说话是马宏升面对的最大挑战。

One of the toughest of these is how to price your time .

最难的是如何给你的时间定价。

But last year jono faced his toughest test yet .

然而去年jono遭遇了人生中最艰难的考验。

The toughest security lock there is .

这是目前最难操作的安全门锁。

Alabama 's immigration law is the nation 's toughest .

阿拉巴马州的移民法是美国最严厉的。