This is not always safe or effective as the dose will not be accurate.

由于剂量不准确，这种做法并不一定是安全或有效的。

youdao

It's not safe, it's not safe at all. Everywhere you go lock your bike.

真的不安全，一点儿也不安全，所以不管去哪儿你们都得把车锁好。

youdao

It's not a pure dichotomy anymore that entrepreneurship is risky and other jobs are safe, so why not do what I love?

创业有风险，其他工作才安全，这已不再是笃定的情形，因此为何不做我所喜欢的呢？

youdao

The experiment showed that the bite of an infected mosquito was not a safe way to protect people from yellow fever.

VOA: special.2010.05.18

Today we know, for example, if you can put one certain kind of element in your mouth or eat that, it doesn't necessarily mean you want to put the element next to it and your mouth as well, that might not be safe.

现在我们知道了，比如，即使你能把某一种元素放进嘴里,或者吃下去，这也并不一定意味着,你会把它邻近的元素也吃进嘴里,这可能会有危险，但。

麻省理工公开课 - 化学原理课程节选

Well, not everybody, but everybody can use to keep emails safe, just like sort of a really easy thing to do.

嗯，不一定是所有人，但是每个人都可以轻而易举地用这种密码来保证自己邮箱的安全，

积极参与俱乐部活动 - SpeakingMax英语口语达人

He said that while the ban would reinforce the message that such drugs were not safe "it will not be long before other drugs are manufactured to replace it".

BBC: Father blames mephedrone for son's death

But it's just not practical, it's not possible, it's not safe for them to do that.

BBC: Obesity rates fall in Philadelphia

They were fleeing from an area they did not feel safe in and where they thought their children would not be safe and they moved to other places.

BBC: Milosevic defence transcript