Tridane
十三烷基苯
🗣️ 情景例句
It's a great college.
那是一所好大学。
It's a beautiful country with forests, mountains and deserts.
这个国家很美，它有很多森林、山和沙漠。
The situation seemed hopeless and he knew his life was in danger.
这种情况看来是毫无希望了，他知道他有生命危险。