C4
abbr. 补体4（complement 4）
🗣️ 情景例句
Ah. She's out.
啊。她出去了。
The netbugs are trapped in China Telecom's web.
中国电信捕捉缠在网上的网虫。
a box of pills, or a small jar of ointment,
一盒药丸、一小瓶药膏