Lactolase
乳酸酶
🗣️ 情景例句
He appeared ill at ease at the party.
他在宴会上显得很拘谨。
Practice what you preach.
言必行。
A short while ago, my sister helped me to carry one of my old bookcases up the stairs.
几分钟前，我妹妹帮我把一个旧书橱抬上了楼。