He smiled sadly.

他伤心地笑了。

youdao

He smiled sadly, walked out of the theater and went home.

他苦笑一下，悻悻地离开电影院回家去。

youdao

Grandfather smiled sadly and said in a weak voice, "I wish it were that easy..." But to please her, he took a tiny bite of the apple.

祖父悲伤地笑了笑，用十分微弱的声音说道：“我希望真有这么简单……”但为了让她高兴，他还是咬了一小口。

youdao