爬犁

gǎi jìn yùn guǎn pá li jì shù

改进运管爬犁技术

Improving sledge for pipe transportation

nà hōng hōng zuò xiǎng de bō tāo shēng yǐ jīng yān mò le tā cǐ kè tā zhèng fú zài gǒu lā de pá li shang chí guò máng máng de xuě yuán

那轰轰作响的波涛声已经淹没了他，此刻他正伏在狗拉的爬犁上驰过茫茫的雪原。

The roaring sound of the waves had already swept over him, and at this moment he was lying on a dogsled racing over a vast plain of snow.