Bireactant
双元推进剂, 二元反应物, 双反应物
🗣️ 情景例句
The musicians. The dancers--in the parks and on the streets.
音乐家啦 ，在公园或街头跳舞的人啦。
Whose responsibility are the shipment charges?
运费由谁来负责呢？
What's in the box? Ann thought. Was it some clothes?
“盒子里是啥呢？”安心想，会是衣服吗？