Blithesome
a. 愉快的, 高兴的
✅ 同义词
🗣️ 情景例句
Hmm. I can't remember.
嗯， 我记不起来了。
I haven't the slightest idea.
我一点儿都不知道。
The factory has been there for several years.
这家工厂在那儿已有好几年了。