Udl
[计]= Up Data Link,上行数据链路
🗣️ 情景例句
with my children and grandchildren.
与儿子、 孙子们在一起。
Have you marketed your product yet?
你们的产品尚未推出市场吗？
A fine rain began to fall on our heads and the temperature had dropped.
一阵小雨落到我们头上，气温开始下降了。