轨

卧轨

wò guǐ

to lie across the railway tracks (to commit suicide or to prevent trains from getting through)

遐轨

xiá guǐ

long-established rules of conduct

铺轨

pū guǐ

to lay railway track

钢轨

gāng guǐ

steel rail

链轨

liàn guǐ

caterpillar track (propulsion system used on bulldozers etc)

铁轨

tiě guǐ

rail

双轨

shuāng guǐ

double-track; parallel tracks; dual-track (system)

音轨

yīn guǐ

sound track

养老金双轨制

yǎng lǎo jīn shuāng guǐ zhì

dual pension scheme (PRC)

上轨道

shàng guǐ dào

to stay on track

不轨

bù guǐ

errant

低地轨道

dī dì guǐ dào

see 近地軌道|近地轨道[jin4 di4 gui3 dao4]