塔吊的英文：
tower crane

tower是什么意思：
n. 塔；堡垒
v. 高耸；超越

sketch of the tower
对那座塔作素描

A small tower or tower-shaped projection on a building.
塔楼,角塔建筑物上伸出的小型塔或塔状建筑

The towers are surfaced with steel plates.
在塔面上加了一层钢板。

There is a small tower of luggage there.
那儿有一小堆叠得高高的行李。

The tower leaned a little to the right.
塔有些向右倾斜。

crane是什么意思：
n. 鹤；起重机，吊车
v. 伸着脖子（看）；用起重机起吊

crane:To hoist or move with or as if with a crane.

range crane fly
牧场大蚊

Scotch derrick crane
苏格兰式人字起重机

high pedestal jib crane
门座式悬臂起重机

They crane up building material.
他们用起重机举起建筑材料。