Opalescin
乳白蛋白
🗣️ 情景例句
Betty, you had it, but you didn't say it.
Betty你知道答案， 但是你没有说出来。
He who does no good, does evil enough.
好事不做，坏事做绝。
and that this happens at a rate which differs little from person to person,
衰老的速度在人与人之间相差甚微，