formation
formation
noun
formational
adjective
语源
noun
- [mass noun]the action of forming or process of being formed
形成，组成
the formation of the Great Rift Valley.
东非大裂谷的形成。 - a thing that has been formed
形成的事物
strange black rock formations.
奇怪的黑色岩层。
■a structure or arrangement of something
结构，排列
a cloud formation.
云层。
■a formal arrangement of aircraft in flight or troops
（飞机，部队）队形，编队
a battle formation.
战斗队形。
[mass noun]the helicopters hovered overhead in formation.
直升机在空中编队盘旋。
formational
adjective
语源
- late Middle English: from Latin formatio(n-), from formare 'to form' (see form)
考试词汇表
