Dialkylene
二烯基
🗣️ 情景例句
Thank you, Mr. Lu. Please wait a moment while I check our reservations list.
谢谢，陆先生。请稍等，我查一下订房名单。
The greatest fool is he who worries about what he cannot help.
操心无法可想的事是最大的傻瓜。
No, thanks. I can manage it myself.
不，谢谢。我可以自己提。