Vainer
a. 自负的( vain的比较级 ); 爱慕虚荣的; 徒劳的; 无用的
🗣️ 情景例句
I don't like to waste my time chatting on the net.
我不想把时间浪费在网络聊天上。
Let's move on to what makes our product sell so well.
让我来说明是什么原因使我们的产品销售得那么好。
the line that the pen was drawing wriggled from side to side.
笔所画出的线就会左右摆动。