Sif
abbr. selective identification feature 选择识别特征
🗣️ 情景例句
Who was it?
谁来的电话
She requests your presence at the conference.
她恳求你们参加会议。
A little. He fell and hit his leg on a table.But he's OK now.
伤了点儿。他跌倒了，腿撞在桌子上。但是现在已经好了。