Also not sure的意思|示意

Paying a whole year's dues up front, instead of month per month, may also save you money-but only if you're sure not to give up or cancel your membership.

支付一整年的会费而不是一个月一个月的支付，也会节省你的钱的，但是只有当你非常确定不会放弃或是取消自己的会籍。

Also, they want to make sure they do not violate federal regulations.

同时，他们也要确保自己不违反联邦法规。

You can also select more, but make sure you do not leave out anything that M1 has used.

您也可以选择更多，但是要保证不能漏掉任何一个M1已经使用的。

We also have evidence that various medieval markets employed a kind of police to make sure that people did not sell spoiled food.

我们也有证据表明，中世纪的各个市场都雇佣了一类警察，来确保人们不会出售变质的食物。

Also, because the environment during which the deposits formed is not well understood, scientists are not sure how diverse they will be.

这些沉积物的形成环境现在还没有被完全弄清楚，科学家们不确定它们之间是否有差异。

I also find it tyrannical. I'm not sure yet whether it encourages people to be more creative or to mold themselves more carefully to fit into the clean design of Facebook.

此外，我认为网络很武断，我不确定网络到底是在鼓励人们变得更富创造力还是在逼迫他们更小心地去适应Facebook那简洁的界面。