Uncom
abbr. uncommon 不凡的，罕有的，难得的
🗣️ 情景例句
Now, once you put the ring on Susan's finger,
现在， 你一旦将戒指戴上Susan的手指，
Let's cross the bridge when we come to it.
既来之，则安之。
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，