Florocid
氟化钠
🗣️ 情景例句
Summer is vacation time.
夏季是度假的好时机。
The farmers are the founders of civilization and prosperity.
农民是文化和繁荣的奠基者。
wind, earth movements or tremors, and the gravitational pull of the moon and the sun.
风、地球的运动或震颤和月亮、太阳的引力。