Unduloid
波状体
🗣️ 情景例句
There's been a car accident, please call the police.
这发生了车祸，请快报警。
The weather has been hot so far this summer.
到目前为止，今夏天气一直很炎热。
Of course he is. He's very successful. He's made lots of records. They broadcast a programme of his music last month on the radio. Why don't you come on Saturday? I think you'd enjoy it.
当然啦！他很成功。他已经灌制了大量唱片。广播电台上个月播放了他的一个音乐节目。你星期六干吗不去听听呢？我想你会喜欢他的。