That could have a serious negative impact on the U.S..

回答是有可能对美国造成严重的负面影响。

youdao

However, if unscientific use may lead to serious negative impact.

但若不科学地使用可能会带来严重的负面影响。

youdao

And second, a more severe degree of development of the virus - is really serious and has serious negative impact both on your life and on the lives of others.

并且第二种，这种病毒的一种更为严重的新品种——真的很严重，并已对你的生活和他人的生活都产生了严重的消极影响。

youdao

Not doing your homework before you travel abroad could have a serious negative impact on your future career.

FORBES: Your Basic Guide To Business Travel Abroad