煤渣跑道 meaning in Chinese

dirttrack

But he took off his sweater and they began jogging slowly around the cinder track .
不过，他还是脱了厚毛衣，两人开始沿煤渣跑道慢慢地晃着跑起来。
Show as a result : the runway of plastic cement and the runway of coal cinder , have a favourable wind run , countrary wind run , cloudy , plenty of audiences , noise have more obvious influence for the pedal accuracy of long jump
结果表明：塑胶跑道与煤渣跑道，顺风跑，逆风跑，阴天，大量观众，噪音对跳远踏板准确性都具有较明显的影响。