He was seriously ill when he was in junior high school.
我翻译出来你也看不懂，它不认得你。
When I was six years old, I had a serious illness.
The man is dying because of serious sickness. 这里一般用sickness比较地道. 垂危用be dying
get sick seriously.
I was seriously sick at the age of six.
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笨鸟肥肥
