Immunobiology
免疫生物学
🗣️ 情景例句
Do you happen to know...
你是否碰巧知道…
How long have you lived here?
你住在这里多久了？
Earlier, we were infants and young children, and consequently more vulnerable;
再早一些，我们是幼儿和小孩子，身体较脆弱；