1. in open公开，公然地
She was tried in open court.
她被公开审判。
Soon the entire armed forces were in open revolt.
很快，整个武装部队开始公然抗命。
Hearing the case in open court is only one part of the judicial process.
公开审理这一案件只是司法程序的一部分。
2. in the open公开地；众人皆知的；在户外；在露天；在开阔地带
Government officials do not want these comments in the open.
政府官员不想公开这些评论。
There's confusion and resentment, and it's almost never expressed out in the open. Take this office, for example
有人迷惘，有人憎恨，可是几乎谁也没有公开表达过。就拿这个办公室的人来说吧。
The medical service had advised us to keep it a secret, but we wanted it in the open.
这家医疗机构建议我们保密，而我们却想公开此事。
Her secret is now in the open.
她的秘密现已公开。
Children need to play out in the open.
孩子需要在户外玩耍。
Many are sleeping in the open because they have no shelter.
很多人因为没有栖身之所，只好露宿在外。
He likes to cook in the open air.
他喜欢在外面做饭。
The film will be shown in the open air tonight.
今晚电影在露天演。
Stand the plant in the open in a sunny, sheltered place.
把这株植物放在一个阳光充足、上方有遮盖物的开阔处。
The Red Army soldiers spent the night in the open.
红军战士在露天过夜。
They have been forced to sleep in the open without food or warm clothing.
没有粮食和御寒的衣服，他们被迫风餐露宿。