Lightheartedness
n. 自由自在, 无忧无虑
🗣️ 情景例句
Never mind.
无所谓。
Is it true that manufacturing of automobiles is a major industry?
汽车生产是主要工业是真的吗？
Were you in San Francisco at the time of the big earthquake in 1989?
1989年旧金山大地震时，你在那儿吗？