fall in
近义词：queue，cavein，join，gettogether，collapse，founder，giveway，give，break，
英英释义
Verb
- break down, literally or metaphorically;
"The wall collapsed" "The business collapsed" "The dam broke" "The roof collapsed" "The wall gave in" "The roof finally gave under the weight of the ice"
- to take one's place in a military formation or line;
"Troops fall in!"
- become part of; become a member of a group or organization;
"He joined the Communist Party as a young man"