Hisam
[计] 分层索引顺序存取法
🗣️ 情景例句
That's a neat idea.
这是个好主意。
I've bee invited over to a friend's, and you?
有个朋友请我去作客，你呢？
The dog's in the garden, too.It's running across the grass.
狗也在花园里。它正在草地上跑，