Methylenum coeruleum
[医] 亚甲蓝, 美蓝
🗣️ 情景例句
555-9470…and it's busy….
555-9470……还是忙音 ……
God helps those who help themselves.
自助者天助之。
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，