It's a long story/三言两语说不清楚。 Stop talking to me/请别再说了。 Don't be so silly/别太傻了。 Keep your voice down/声音小点。 Think for a minute./仔细想想。 Rain check/改日再约怎么样? I'll pick you up at/我三点钟去接你。 Don't let something that doesn't matter cause you to lose something that does/别让那些不重要的事来影响你,从而让你失去那些真正重要的东西。