Qpc
肺毛细管血流量
🗣️ 情景例句
have been busy at work this morning
一早上都在忙着
Do you usually lenrn Japanese on Saturday?
你通常在星期六学日文吗？
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。