Correct
锁边儿
/ suǒ biānr /
Strokes
Example
As a Verb
lockstitch; serge; overcast (the raw edges of a fabric) to prevent unravelling
1
Bùliào
布料
zài
在
féng
缝
biānr
边儿
zhīqián
之前
yīnggāi
应该
xiān
先
suǒ
锁
biānr
边儿
。
The raw edges of the cloth need to be serged before hemming.