Preenrichment
预富集
🗣️ 情景例句
She feels bad, too, Grandpa.
她也很沮丧， 爷爷。
Steady wins the race.
从容就是赢得比赛的诀窍。
It effectively spread the disease all over the continent and drastically reduced the rabbit population.
蚊子把这种疾病扩散到整个澳洲大陆，效果甚佳，结果兔子的数目大为减少。