🧩 词语组成解析
abbr. CD4细胞；CD4抗艾滋病药（Cluster of Differentiation 4）
cell
[sel]
n. <生>细胞;小牢房;电池;<诗>墓穴;
vi. 住在牢房或小室中;
vt. 囚禁;
🗣️ 情景例句
Don't open the door if you don't know who it is.
如果有陌生人敲门不要开门。
After dinner I read a magazine and made some telephone calls.
在晚饭以后我读一本杂志和打了一些电话。
Why isn't Mrs. Lee's cat catching the mice?
李太太的猫为何不在抓这些老鼠呢？