Defined symbol
[计] 定义符号
🧩 词语组成解析
a. 清晰的, 轮廓分明的；有定义的, 确定的
🗣️ 情景例句
It's like a special music.
它就像是一种特别的音乐。
This is a radio.
这是一台收音机。
The operation, which lasted for over four hours, proved to be very difficult because of the hard resin which covered the skin.
手术持续了4个多小时，非常难做，因为皮肤上覆盖着一层硬硬的树脂。