He seemed a bit subdued to me.

　　我覺(jué)得他當時(shí)有點(diǎn)悶悶不樂(lè )。

　　It's just a bit of harmless fun.

　　開(kāi)個(gè)小玩笑罷了，并無(wú)惡意的。

　　He looked a bit embarrassed.

　　他看上去有點(diǎn)尷尬。