Sif
abbr. selective identification feature 选择识别特征
🗣️ 情景例句
This is beautiful! Chinese calligraphy. What do these characters mean?
好漂亮！是中国书法！这上面写的是什么意思？
My uncle was a pilot with the airlines.He just retired.
我的叔叔是航空公司的一名飞行员，他刚退休了。
Four years later, she left the children's home and entered an institution for the blind, where she learnt braille.
4年之后，她离开孤儿院，进入一盲人学校，学习布莱叶盲文。