He knows his stuff.

他了解他的品行。

youdao

"He has an awesome comprehension level and he's fixated on details, " Carter, a special-education teacher at Ottawa Hills High School, said of Sean. "He knows his stuff.

“他的理解力很好，而且很注意细节，”卡特，渥太华山区高中的一名特殊教育老师在谈到肖恩时说，“他知道自己的东西。”

youdao

He knew they'd be in the first team and, if he says one of these will be in the first team, I'll hold my hand up because he saw our team and knows his stuff.

他知道他们将进入一队，如果他说其中某个人将进入一队的话我是绝对同意的。

youdao

He knows his stuff, and in common with the most effective Eurosceptics like the Conservative MEP Dan Hannan, he enjoys a good duel as an intellectual challenge.

ECONOMIST: European politics

He is just phenomenal, and he knows his stuff.

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