🗣️ 情景例句
Hi, Grandpa.
嗨， 爷爷。
I asked him to clean it for me, but he wouldn't.
我请他帮我清理，但是他不肯。
Though a number of descents have been made, much of it still remains to be explored.
人们多次进入洞内探险，但至今尚有不少东西有待勘探。