最后，工程进行到安装屋顶大梁这一紧要步骤了。

At last they got to the point of installing the roof beam.

youdao

我们将在屋顶安装太阳能电池板。

We would have solar panels on the roof.

youdao

遮盖隐藏钻孔、切割及屋顶表面之间缝隙等安装痕迹。

Conceal evidence of drilling, cutting, and fitting to room finish.

youdao

遮盖隐藏钻孔、切割及屋顶表面之间缝隙等安装痕迹。

Conceal evidence of drilling, cutting, and fitting to room finish.

youdao