He is suffering from a virus infection.是什么意思？

He is suffering from a virus infection.

他受到病毒感染。

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

suffering

n. 受苦，遭难，苦楚，苦难，令人痛苦的事；v. 受苦(suffer的现在分词)，蒙受；adj. 受苦的，患病的；

例句
People will accept suffering that can be shown to lead to a greater good...
如果能证明眼前的苦难会带来更大的好处，人们就会愿意承受。

from

prep. （表示时间）从…，（表示原因）因为，（表示来源）来自…，（表示分离）与…分离[隔开]；

例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

virus

n. 病毒，病毒性疾病，毒素，毒害，[计算机科学]计算机病毒；

例句
The virus seems to have attacked his throat...
病毒看来已经侵蚀到他喉部了。

infection

n. <医>传染，感染，传染病，染毒物，影响；

例句
...a worrying level of complacency about the risks of infection from AIDS...
对感染艾滋病的危险毫不在意，实在堪忧