Sdma
空分多址
🗣️ 情景例句
I have just one--playing golf. It's expensive, but it's a lot of fun.
我只有一种爱好，打高尔夫球。花费很高，但非常有趣。
It is easy to open a shop but hard to keep it always open.
开设店铺易，维持常开难。
Dad, this is Li Lei. Li Lei, this is my father.
爸爸，这是李磊，李磊，这是我爸爸。