Cissoid
凹边的,蔓叶线的
🗣️ 情景例句
How can anybody get a word in around here?
在这里谁有机会插话呢？
OK. We have a nonstop flight leaving Kennedy at 9:25.
好的。9点25分有一趟直达班机，从肯尼迪国际机场起飞。
The slope averages about 1 in 30, but contains steep,
坡度平均约为1/30，但其中包括陡峭的，