Quadrafos
[商]四磷酸钠
🗣️ 情景例句
Family Album, U.S.A.
美国写真集 。
A good horse often needs a good spur.
好马常要好靴刺。
Then the Class 2 runner dropped his stick on the ground when he was passing it on to the fourth runner.
忽然2班的运动员在传棒给第四个运动员时，把棒弄掉到了地上。