Distancing
vt. 把…远远甩在后面（distance的现在分词形式）
🗣️ 情景例句
Then an adult must sign for you.
那就必须有一位成年人来替你签字。
I did the best I could.
我尽力了！
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，