单词	self-activity
释义	self-activity noun self-ac·​tiv·​i·​ty ˌself-ˌak-ˈti-və-tē  : independent and especially self-determined activity Word History First Known Use 1644, in the meaning defined above
随便看	firebug firebugs fireburn bush firebushes fireclay fireclays firecracker firecrackers firecrest firecrests fired fired (at) fired (up) fired at fired away fired off fired up fired-on firedamp firedamps firedog firedogs firedrake firedrakes firee

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