tóu yǎng sāo gēn
头痒搔跟
hǎo nán bù gēn nǚ dǒ
好男不跟
gēn zōng zhuī jī
跟踪追击
zhàn wěn jiǎo gēn
站稳脚跟
lì dìng jiǎo gēn
立定脚跟