🗣️ 情景例句
Different kinds of activities, such as commenmorative meetings, planting trees,
举行各种各样的活动，例如召开纪念大会，植树造林，
A constant guest is never welcome.
久住非佳宾，常来不欢迎。
I have a letter of introduction here.
我这儿有一封介绍信。