" He is well behaved, and he's bright, and he's got this very serious speech defect."

“他非常守规矩，也很聪明，只是有特别严重的发声缺陷而已。”

Toxo can cause serious birth defects.

弓形虫会导致严重的出生缺陷。

The drug was found to cause serious birth defects.

【birth】这种药被发现可造成严重的先天缺陷。

The US Senate has approved a bill to provide more than a billion dollars to combat Zika virus which can cause serious birth defects.

美参议院批准拨款十多亿美元用于抗击寨卡病毒，寨卡可导致婴儿缺陷症。

Because while this virus has been fought for decades to be practically harmless, it may turn out to be responsible for a rash of serious birth defects.

因为尽管这种病毒经过数十年的斗争，几乎无害，但它可能会导致一连串严重的先天缺陷。