Be sure not to 千万别 ; 切勿
be sure not 切勿
Not Sure 不确定 ; 不一定 ; 不能确定 ; 不清楚
be sure not to delay 切勿迟延
I'm not sure 我不确定 ; 我还不确定 ; 我也不肯定
I am not sure 我不确定 ; 有疑问的语气
Not sure I understand 但无法确定能了解 ; 无法确定能了解 ; 我还没完全理解 ; 我不太有把握
Eating more than needed is for sure not healthy.
吃得过多超出所需肯定是不健康的。
How can you make sure not to waste this great chance to learn?
你如何确保不浪费这个绝佳的学习机会?
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。
But be sure not to burn the skin.
VOA: special.2009.08.11
Now, the reason why I skipped it is I'm not sure this is the best way to look at the question.
我之所以没讲是因为,我不能肯定这是考虑这个问题的最佳方式。
You want to... you're not sure if you're going to read something that's related to literature, or to science,
你想要……你不确定是读点跟文学相关的还是读点跟科学相关的内容。
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