Permeometer
织物透气性测试仪
🗣️ 情景例句
Read it.
读出来吧。
Today is the scholar of yesterday.
今天是昨天的学者。
the young man has a glorious future before him and the old one has a splendid future behind him:
青年人有光辉灿烂的前景，而老年人的辉煌已成为过去。