Correct
认脚
/ rèn jiǎo /
Strokes
Definition
to know your right shoe from your left (colloquial)/to know which of two you want
Example
As a Verb
(of a pair of shoes) not be interchangeable
1
Bālěiwǔ
芭蕾舞
xié
鞋
bù
不
rèn
认
jiǎo
脚
,
dàn
但
chuān
穿
jī
几
cì
次
hòu
后
,
jiù
就
suí
随
jiǎo
脚
le
了
。
Ballet slippers are interchangeable, but after you've worn them a few times, they will conform to the shape of your feet.