The second photo shows the cover in place but not bolted on.

第二图为覆盖的地方，但没有螺栓上。

youdao

I bolted on a miserable rainy day, and began trying it as soon as it was dry!

我开线的那天下着暴雨，等路线变干之后我就迫不及待的上墙了！

youdao

Unlike the 4cv, which was a full monocoque, the R4 body was bolted on to a chassis.

不像4cv，这是一个充满单体，R4的尸体被反锁到一个底盘。

youdao

During such climates, marketers have historically bolted on service offerings to help differentiate themselves.

FORBES: Ode to the O-Ring: Expertise Beats Price Pressures Every Time

But, the MMO components of the game seem bolted on to a solid, compelling single-player game.

FORBES: Is Star Wars: The Old Republic A Good Game?

"In many products, security is an afterthought, it's kind of bolted on afterwards, " Mr. Berson says.

WSJ: Mideast Uses Western Tools to Battle the Skype Rebellion