Immunodeficiency
n. 免疫缺陷, 免疫缺损
🗣️ 情景例句
It's the biggest company in the country.
它是全国最大的。
Marriage is a lottery.
婚姻是一件难于预料的事。
You're never too old to enjoy a Christmas stocking.
“你永远不会老到不能享受圣诞袜的乐趣，”