Permeometer
织物透气性测试仪
🗣️ 情景例句
you have a lunch appointment with Mr. Levine,
跟Levine先生约好吃午餐。
Good. That's just what we want to hear.
很好，那正是我们想要听的。
I appreciate John's helping in time.
我感谢约翰的及时帮助。