谢谢你邀请我，不过我实在是太累了。
Thank you very much for asking me, but I feel rather tired.
youdao
我昨天实在是太累了，所以今天上课的时候就睡着了。
I was so tired yesterday that I dozed off in class.
也许我的心脏年纪大了，开始衰弱；又或者我实在是太累了。
Maybe my heart is getting old and weak, or maybe I'm just dog-tired.
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