介绍:
sports meeting n.
event n.
a sports competition n.
competition n. / tournament n.
"The Olympic Games is an event."
football tournament n.
tennis tournament n.
a historical event n.
a momentous event n.
9/11 n. (nine/eleven)
activity n.
open class n. / demo class n.
"I'm going to a party/open class/English corner tonight." (Don't say activity, say what the activity is).
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