to build a building, wall, or other structure

The war memorial was erected in 1950. 这座战争纪念碑建于1950年。

The soldiers had erected barricades to protect themselves. 士兵们筑起了街垒用以自卫。

to raise something to a vertical position

They erected a marquee to accommodate 500 wedding guests. 他们搭起了一个大帐篷以接待参加婚礼的500位客人。

in a position with your back and neck straight

He's very tall and erect for his 78 years. 尽管已经78岁了，他还是那样挺拔高大。

Does he stand erect or tend to lean toward one side?

He said the creatures were walking erect, like people.

When a part of the body, especially soft tissue, is erect, it is harder and bigger than usual, often pointing out or up.

an erect penis 勃起的阴茎

erect nipples 挺起的乳头