Electrotint
[刷]彩色电版, 彩色电版术
🗣️ 情景例句
Thank you.
谢谢。
A good maxim is never out of season.
至理名言不会过时。
below 20 per cent, its bactericidal action is negligible.
浓度低于20％时，杀菌能力基本上就不存在了。