Hematocytometer
血细胞计数器
🗣️ 情景例句
Sorry, Dad.
抱歉， 爸爸。
I can come any day except Thursday.
我除了星期四任何一天都能来。
Aunt Harriet lived in that leisurely age when servants were employed to do housework.
哈丽特生活在一个悠闲的年代，家务事都由雇来的佣人代劳。