🧩 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
Yes. It's a lovely day and good enough to travel.
是的，天气很好，旅游是再好不过了。
What track does the Metroliner leave from?
华纽特快从第几轨道开出？
I want to go to the shop. I want an eraser.
我想去商店买块橡皮。