ɡēn
脚后跟
jiǎo hòu gēn
Heel
高跟儿鞋。
gāo gēn er xié.
High-heeled shoes.
他跑得再快，我也跟得上丨比喻用法跟上形势。
tā pǎo de zài kuài, wǒ yě gēn de shàng | bǐ yù yòng fǎ gēn shàng xíng shì.
No matter how fast he runs, I can keep up | Figurative usage: Keep up with the situation.