我曾经是一个精力充沛的年轻人，但是这些相关的变化彻底钝化了我。
I had always been a youthful and energetic person, and these changes concerned me greatly.
老虎可以指凶残的人。勇敢的士兵在战斗中像只老虎。一个活跃的、精力充沛的年轻人干起活来虎虎有生气。
"A tiger" may refer to a ferocious man. a brave soldier is a tiger in a fight. an active, energetic young man works like a tiger.
老虎可以指凶残的人。勇敢的士兵在战斗中像只老虎。一个活跃的、精力充沛的年轻人干起活来虎虎有生气。
"A tiger" may refer to a ferocious man. a brave soldier is a tiger in a fight. an active, energetic young man works like a tiger.
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