🗣️ 情景例句
When my grandpa is in a bad mood, he's grouchy with everyone.
爷爷脾气坏的时候，对所有的人都不满意。
Wisdom is a good purchase though we pay dear for it .
为了求知识，代价虽高也值得。
and as the number of stars in the universe is so vast,
因为宇宙中恒星的数目极其庞大，