无效

Their efforts to revive him were futile.

他们对他抢救无效.

The coupon is not valid if detached.

这折扣券撕下即无效.

The treaty has been declared void.

条约被宣布无效.

The goal was disallowed because Wark was offside.

由于沃克越位在先，这个进球被判无效。

The marriage was annulled last month.

上个月这桩婚姻被宣告无效。

A spokeswoman said the agreement had been declared null and void.

女发言人称该协议已宣布无效。

Rush had a 45th-minute goal disallowed for offside.

拉什第45分钟的进球被判越位无效。

They tried artificial respiration but it was of no avail.

他们试做人工呼吸,可是无效.

A passport that is out of date is invalid.

护照过期是无效的.

An official decree invalidated the vote in the capital.

一份官方法令宣布在首都举行的投票无效。

If the cortisone doesn't take, I may have to have surgery.

如果可的松无效，我恐怕只能动手术了。

Shockingly, this useless and dangerous surgery did not end until the 1930s.

令人震惊的是，这种既无效又危险的手术直到20世纪30年代才被废止。

The contract is void.

这契约无效.

All rescue measures proved ineffectual.

抢救无效.

The agreement was declared void ab initio.

此协议自一开始就被宣布无效。