59-a youngster who does not know what he is good at will be not sure what he is good for.
一个不懂得自己精通什么的青年不会确切地知道他的价值所在。
People may not be sure about life on Mars until a sample of life is brought back.
人们可能不确定火星上是否有生命，直到一个生命样本被带了回来。
I'm not sure if my leg will be ready for the game.
我不确定我的腿能不能在比赛前恢复。
The man might be a doctor in this hospital, but I'm not sure.
那个人可能是这家医院的医生，但我不确定。
I'm not sure what I want to be but I'm sure that you have already known.
我不确定我想成为什么，但我相信你已经知道了。
I'm not sure what kind of engineer I want to be yet.
我还不确定自己想成为什么样的工程师。
I'm not sure that your fish will be able to remember what your face looks like, but I wouldn't be too surprised if it could remember you in other ways, perhaps by the sound of your footsteps as you walk towards the tank.
我不确定你的鱼是否能记住你的脸，但如果它能以其他方式记住你，也许是通过你走向鱼缸时的脚步声，我也不会太惊讶。
No one knows what she might be doing now, but not washing up, that's for sure.
没人知道她现在在干什么，但肯定不是在洗餐具。
My idea would be to combine that with careful oversight, a strong organizational culture, and make sure the goals that you use are going to be constructive and not significantly harm the organization.
我的想法是，将这一点与仔细的监督、强大的组织文化结合起来，确保你使用的目标具有建设性，不会对组织造成重大损害。
I'm not sure there might be additional things that international students have to do like additional tests.
我不确定国际学生是否需要做额外的事情，比如额外的考试。
I'm not sure I want to change rules, but I'd like the police to be stricter on the rules.
我不确定我是否想要改变规则，但我希望警察能够更严格地执行规则。
Turning to cost, I am not sure to which Merrill Lynch study you are referring, but it would be simplistic to compare seat-mile costs of narrow-body operation over U.S.
说到成本，我不确定你指的是美林的哪一项研究，但用美国各地窄体飞机运营的座位-英里成本做比较，未免过于简单。
Even now we could not be sure that the militants would not find some new excuse to call a strike the following winter.
即使到现在，我们也不能确定这些激进分子不会找到某个新的借口在下一年冬天号召一场罢工。
Be sure not to take extra breaks or too long breaks as it can affect your plan.
确保不要有额外的休息或太长时间的休息，因为这会影响你的计划。
When they get to know me and to trust me, knowing for sure I'm not selling them something—there'll be more honest feedback from them.
当他们开始了解我、信任我，并确信我不是在卖什么东西给他们时，他们会给出更诚实的反馈。
It seems that pretty much everyone else in the class gets what they are supposed to be doing but I'm not so sure.
似乎班上几乎每个人都懂了他们应该做什么，但我却不那么确定。
One can never be sure that it is not on the point of breaking out into action.
人们永远无法确定它是否即将付诸行动。
As I'm sure you all know, Morrison is both a popular and highly respected author and it's not easy to be both.
我相信你们都知道，莫里森既是一位既受欢迎又备受尊敬的作家，要同时做到这两点并不容易。
I'm not sure I want to change the rules, but I'd like the police to be stricter on the rules.
需不需要改交通规则我说不好，但是我希望警察执法能够更严格一些。
It will take a lot of funding to restore it, and I am not sure it'll be made available, which would be a pity.
这需要很多资金去修复，并且我不是很肯定可以得到资金，这个太遗憾了。
And if you keep your curtains closed, burglars are less likely to try and break in because they can't be sure whether someone's home or not.
如果你把窗帘拉上，窃贼就不太可能试图破门而入，因为他们无法确定是否有人在家。
I'm not exactly sure what she does there, but it seems to be related to humorous poems.
我并不确切地知道她在那里做什么，但似乎与幽默诗歌有关。
Be sure not to keep or cook more food at home than you need.
一定不要在家里储存或烹饪超出自己需要的食物。
You must not touch it, or you would be sure to hurt your hand.
你不能碰它，否则你的手一定会受伤。
The contact lens has not been put to the market, but researchers are quite sure that it will be welcomed.
这种隐形眼镜还没有投放市场，但研究人员确信它会受到欢迎。
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