Constants
n. 常量, 常数；物理常数（constant的复数）
🗣️ 情景例句
All right. That's it for today.
行了。今天就做这些。
That house is for sale. It has central heating.
此房出售，房子里有供暖设备。
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，