不危险的

Plasma renin activity is a powerful risk factor for vascular and kidney dysfunction.

血浆肾素活性是血管和肾脏功能不全的一个强烈危险因素。

So, after class activities, students should always pay attention to safety, do not roughhouse run, between classes engage in dangerous activities, physical education, clean-up, group activities, etc.

所以下课活动时，同学们要时刻注意安全，不要打闹奔跑，课间不搞有危险的活动，体育课，大扫除、集体活动等要做好安全防范工作，上下楼梯时轻声靠右行，走出教室时不要拥挤。

TP : Don't you know that this is very dangerous for running a red light?

交警："你难道不知道闯红灯是非常危险的吗？"

It is impossible to keep children safe from all the dangers.

要想让孩子免于一切危险是不可能的。

She's a poor/good security risk.

她是个不太/十分危险的人。

We'll stay in the shallow area. Trust me, it's safe.

我们就在浅水区，相信我，不会有危险的。

I'm not talking about the shoplifting. I'm sure she didn't even know they were dangerous.

我不是在说去商店偷东西-我确信她并不知道那些是危险的

The guide knows the short mountain-path, and though it be dangerous, though there be great obstacles to climb, though there be many pitfalls, if you would be as the guide himself, you must follow the guide who knows -follow not blindly, not superstitiously, not in credulity, but through your own desire to find the Truth, through your own suffering, through your own desire to set aside those things which are fetters, which are holding you as cords of affliction.

向导知道最短的山路，并且尽管它是危险的，尽管有巨大的攀爬的障碍，尽管有许多陷阱，如果你想要成为像向导本人那样，你必须跟随那位知道的向导——不盲目地，不迷信地，不轻信地跟随，而是通过你自己的渴望去发现真理，通过你自己的痛苦，通过你自己的愿望去把那些是枷锁，那些像痛苦的绳索一样困住你的事物搁置在一旁。

It is dangerous for a person to go without water for a long time.

一个人长时间不喝水是危险的。

It will be very dangerous if you don't pay attention to our traffic lights.

如果您不注意交通规则会十分危险的。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。