He is a bit tired.
这句话的来源是英语中常用的表达方式。"A bit" 意思是"有一点"，而 "tired" 意思是 "疲倦"。
例句:
He's a bit tired from working all night. 他因整晚工作而有些疲倦。
She's feepng a bit tired after her long fpght. 她经过长途飞行后有些疲倦。
He's a bit tired, but he's still going to finish the project. 他有点儿累了，但他还是会完成项目的。