not 四级六级

Don't become too confidential with strangers.

对陌生人不能太信任。

I expect not.; I don't expect so.

我认为不会。

Not arrogant with victory, not dishearten with setback.

例句〗胜利了不要骄傲，失败了不要～。

Don't waste the flour; there isn't much.

不要浪费面粉，没有多少了。

In conversational English “is not” often contracts to “isn't”.

口头英语中is not常缩写为isn't。

Don't scold the child.It's not his fault.

别责怪孩子, 不是他过错。

If the hen does not prate,she will not lay.

母鸡不唠叨不下蛋。

I oughtn't to do that, it's not ethical.

我不该做件事，它是不合乎道德。

I don't care two pins whether she comes or not.

她来不来, 我不在乎。

Motherhood doesn't suit her; she shouldn't have had children.

"她不宜做母亲,她不该生孩子。"

I didn't flunk but I didn't do too well.

我没有不及格，但考得不太好。

Don’t look at me! I didn’t say a dicky bird.

别看我！我什么也没。

Soames checked his instinctive "Not particular"--he would not chaffer with this alien.

斯抑制着句“无所谓”口头禅没有--跟这个外国家伙犯不着噜苏。

That doesn't mean I don't get to kibitz a lot.

当然这并不意味着我就不能发表意见了。

Objective To investigate the immunofluoresce nt and immunoblotting features of paraneoplastic pemphigus(PNP).

目研究副肿瘤性天疱疮患者免疫学特点。

"They didn't flunk out, but their records weren't so hot."

"他们勃没有不及格,但成绩不太好。"

What the eye does not see, the heart does not grieve over.

眼不见, 心不烦。

He didn’t flunk out,but his record isn’t so hot.

他没有不及格,但成绩很一般。

That chair's not very robust; don't sit on it.

把椅子不太结实, 别坐它了。

If the virus cannot replicate itself, it cannot cause illness.

如果病毒不能变异，也就不能够诱发疾病了。