Semiduplex
[电] 半双工
🗣️ 情景例句
Good. Very good. Family Album, U.S.A.
不错， 很不错。 美国写真集 。
And the problems that some of us have had in the past year.
和去年我们一些人遇到的问题。
Are you ready to sign?
准备好可以签名了吗？