Many are sleeping in the open because they have no shelter.许多人因无栖身之处而露宿街头。

The children enjoyed sleeping out in the open.孩子们喜欢在户外睡觉。

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。