Flintware
石器
🗣️ 情景例句
Keep your fingers crossed.
希望你一切尽如人意。
I suppose it's an inconvenience for you to do this.
我推测对你来说做这件事情是很不方便的。
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，