Tdd
abbr. 时分双工（Time Division Duplex）；测试驱动开发（Test Driven Development）；技术资料文摘（Technical Data Digest）
🗣️ 情景例句
Bye-bye, Alexandra. Thanks.
再见 Alexandra 谢谢。
Which one is more difficult?
哪一个是比较难的？
Our friends Julie and Jack were there, too.
我们的朋友朱莉和杰克也去了。