Dipropargyl
[化] 联炔丙基; 1,5-己二炔; 二炔丙基
🗣️ 情景例句
Don't be lazy, the older you get, the harder it will be to learn.
别偷懒，年纪越大，学起来就越难。
You look very tried tonight.
今晚你看起来很疲倦。
It did not;
其实没有。