Stiffs
a. 呆板的；坚硬的；严厉的；拘谨的；拘谨的\\nadv. 僵硬地；彻底地\\nn. 死尸；令人讨厌者；流通票据；劳动者\\nvt. 亏待侍者等\\nvi. 在商业上惨败
🗣️ 情景例句
Who's bringing the booze?
谁带的酒？
What skill! What luck! What fun!
多有本事！多么走运！多令人兴奋！
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，