Definition: when something has a particular shape or things are arranged in a particular way Level: C2
地质学家研究了不寻常的岩石构造。
The geologists studied the unusual rock ___formation.
飞机以编队飞过头顶。
The planes flew overhead in ___formation.
这个洞穴里有我见过的最不可思议的冰结构。
The cave had the most incredible ice ___formation I had ever seen.
