轻型桥台的英文：
light weight abutment

light是什么意思：
n. 光；光源；灯；点火物；日光；角度，眼光
v. 点，点燃；点着；照亮；用灯光指引
adv. 轻的，轻装的
adj. 浅色的；轻的；少量的；轻微的；（负担）轻的；轻盈的，轻快的；清淡的

The torch was lighted.
火炬点亮了。

I'm lost as a light is lost in light.
我如同灯盏迷失在光明里。

The saturation and lightness of light also affect our perceptions.
饱和度和亮度也影响到我们的感觉。

weight是什么意思：
n. 重量；砝码，秤砣；重物；负担；重要性；严重性
v. 使…变重；偏袒

The weight put on this thread was a weight of two pounds.
放在这条绳子上的重物为两磅。

We need a hanging weight.
我们需要一个悬挂着的重物。

Pull one's weight
竭尽全力

abutment是什么意思：
n. 邻接,接界,桥礅

Their house abutted against the hill.
他们的房子紧靠着山。

The newly built plant abuts on the highway.
新建的工厂靠近公路。

To join or be joined end to end;abut.
首尾相连在末端相连或毗连；邻接