椽子

shàng chuán zi

上椽子

lay out rafters

zhǔ chuán zi

主椽子

principal rafter

mù chuán zi zháo huǒ

木椽子着火。

The wooden rafters caught fire.

zài chuán zi shang gàn huó de mù jiang jiāng fǔ zi chuán gěi xià miàn de huǒ bàn

在椽子上干活的木匠将斧子传给下面的伙伴。

The carpenter working on the rafter passed his axe down to his mate below.