R.u.l.
[医] 右上叶(肺)
🗣️ 情景例句
It's good that you went back.
你回去是对的。
When she leaves, he'll cry for a day.
她走时，他会哭一天。
With the invention of writing, a great advance was made, for knowledge could then be not only communicated but also stored.
随着书写的发明，又迈进了一大步，因为这样一来，知识不仅能交流，而且能储存了。