Sdma
空分多址
🗣️ 情景例句
I did not notice it until yesterday.
我一直到昨天才注意到它。
I imagine you are tried after your trip.
我想你旅行回来一定疲惫不堪吧。
a moment later, he ran after me and thrust the pen into my hands.
一会儿，他突然从后追了上来，把笔塞到我手里。