Ditetragon
双四边形
🗣️ 情景例句
The first is why you choose our company.
第一个问题是你为什么要选择我们的公司。
Friends are lost by calling often and calling seldom.
交往过密过疏，都会失去朋友。
Almost any day a young porpoise may be seen trying to turn a 300-pound sea turtle over by sticking his snout under the edge of his shell and pushing up for dear life.
几乎每天都可以看到一只小海豚把鼻子顶入一只300磅重的海龟的硬壳下面，拼命地把它翻过来。