The ballast junction box and the high of lamp-post can be matched by users' choice;

镇流器，接线盒及灯杆高度可由用户选择；

A few yards off he stopped under a lamp-post and laughed in the hearty, noiseless fashion which was peculiar to him.

走出几步以后，他在一个路灯杆子下站住，以他特有的姿势会心而默默地笑了起来。

Tie a dog to a lamp-post

把狗拴在灯柱上*

I drove it into a lamp - post.

我把汽车撞在电线杆上了.

The car hit/struck a lamp-post.

汽车撞到路灯柱上了。

The dog was sniffing at the lamp - post .

那只狗正在嗅路灯柱。

The lorry hit the lamp-post with a crash .

卡车的一声撞到路灯柱上了。

That's right. l drove it into a lamp-post.

是啊。我把汽车装载路灯柱上了。

The dog was sniffing (at) the lamp-post.

那条狗在灯柱旁嗅来嗅去。

The dog was sniffing at the lamp - post.

那只狗正在嗅路灯柱。