Optionality
n. 期权性风险
🗣️ 情景例句
I can organize my time efficiently.
我可以有效地安排时间。
I'm cleaning the yard outside.
我在外面清理庭院。
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，