Tetramethylputrescine
[医] 四甲基腐胺, 四甲烯四甲基二胺
🗣️ 情景例句
The more natural it will become.
它们就会变得越自然。
The problem has been bothering me for weeks.
那个问题已经困扰了我几个星期。
I stopped to let the car cool off and to study the map.
我停下车，让汽车发动机冷却一下，同时查看一下地图。