to show others how to behave by doing it yourself
通过亲自做示范来向他人展示如何行为
"A true leader always leads by example."
"一个真正的领导者总是以身作则。"
to join an activity quickly
someone who loves going to parties
performing very well; full of energy and success
acting emotionless or mechanical like a robot
to memorize something perfectly
to reduce the strength or amount of something
