中国肯定要做出相应的反应。
我知道肯定要做出一些牺牲。
我不知道我[接下来]该干什么，但是我肯定要做有斯蒂芬·泰勒特点的事，塑造我自己的品牌——泰勒品牌。
I don't know what I'm doing [next], but it's definitely going to be something Steven Tyler, working on the brand of myself - brand Tyler.
原因：如果你想职业生涯的提升，你肯定要做你上司相同的工作，尽管有时可能仅仅是上升路上的一小段时间。
Why: If you want to advance in your profession, you’ll eventually have to do the job that your boss is doing, even if only for a brief period of time in order to move up.
如果你已经决定要做整形手术，肯定要面临如何选择整形医生的问题。
If you decide to pursue cosmetic surgery, you'll probably have your choice of cosmetic surgeons.
我不敢肯定在今后的日子里我是否会改变主意，可是，我敢肯定的是，我一定要做个对社会有贡献的人，哪怕是一个清洁工人。
I'm not sure in the future days I will change my mind, but I'm sure that I must make a contribution to society, even if it is a cleaner.
但还没有人沿着非洲内陆那些蜿蜒的河流走过。他朝自个儿吹了声口哨这样做肯定会很疲劳， 但他一定要做。
No one had gone down the winding rivers of inner Africa. He whistled to himself it would be a weary experience, but he would do it.
然而，饥饿促使他一定要做点什么，单凭武力，他肯定无法成功，于是，狮子决定用诡计智取。
Hunger, however, presently compelled him to do something: and as the use of force did not promise success, he determined to resort to artifice.
然而，饥饿促使他一定要做点什么，单凭武力，他肯定无法成功，于是，狮子决定用诡计智取。
Hunger, however, presently compelled him to do something: and as the use of force did not promise success, he determined to resort to artifice.
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