The military machine is ready to change its defensive posture to one prepared for action.
军事当局已准备从防御态势变为备战态势。
《柯林斯英汉双解大词典》
2
They're looking for a change known as "barrel chest," which describes a particular posture and body shape that tends to develop as a secondary symptom of COPD.
Why? They're looking for a change known as "barrel chest, " which describes a particular posture and body shape that tends to develop as a secondary symptom of COPD.