Immunogen
n. 免疫原
🗣️ 情景例句
Never say die.
永不气馁！
I put too much detergent in the washer.
我在洗衣机里放了太多的洗衣粉。
While two detectives were keeping guard at the door, two others opened the parcel.
这时两个侦探把住门口，另外两个侦探打开了包裹。