Haplotype
单模标本
🗣️ 情景例句
Harry's a professional camper, Mom.
Harry是露营专家，妈妈。
For a few, scholarships were sources of support.
有少数人，奖学金是他们接受教育的学费来源。
Is that bag heavy, Penny?
那个提包重吗，彭妮？