"a defensive formation"
"a formation of planes"
"the constitution of a PTA group last year"
"it was the establishment of his reputation"
"he still remembers the organization of the club"
"the formation of gas in the intestine"
"the formation of crystals"
"the formation of pseudopods"
"the formation of sentences"
"the formation of memories"
来自柯林斯例句
来自柯林斯例句
来自《权威词典》
来自《简明英汉词典》
来自《简明英汉词典》