“give up”意思是：放弃，交出。
“give in”意思是：屈服，让步，交上。
give up[v]
英英释义：
lose or lose the right to by some error,offense,or crime.同义词：forfeit/throw overboard/waiver/forgo
give up with the intent of never claiming again.同义词：abandon
例句：Even if your visit extends only as far as Sydney,don't give up on seeing Australian wildlife.
give in[v]
英英释义：
submit or yield to another's wish or opinion.同义词：submit/bow/defer/accede
consent relucantly.同义词：yield/succumb/knuckle/under/buckle under
例句：Most inportant is to not give in when the next quarterly challenge comes up.