Ditrigon
双三角形
🗣️ 情景例句
It's nice meeting you.
很高兴认识你。
It was after dark when we got back,and we were all tired.
我们回来时天已经黑了，并且我们都很疲倦。
Why isn't Mrs. Lee's cat catching the mice?
李太太的猫为何不在抓这些老鼠呢？