OCD  洁癖obsessive compulsive disordersaturated by 被包围1.But that night, something clicked. I was having a lot of trouble with English studying,until one day it just clicked for me.After I talked to my professor,about what I would do for my career,suddenly something just clicked.2.teach someone a lessonI hope that being locked out will teach you a lesson.3.big shotSadam hired a couple of big-shot lawyers to represent him in court.His dad is a big shot in the art world who konws everybody here. 

654弦用大拇指侧面向下拨321弦分别用食指、中指、无名指的指甲和指尖向上拨动作自然，整个人放松，就能够弹出好的音色

pilot1.Desperate times call for desperate measures.  时势所迫Desperate times call for desperate measures.  We're just going to have to sell our car in order to have a little more money to pay the bills.  2.laid back 随意的take things seriously  Just go an talk to him.He may seem kind of intimidating,but he is a really laid back kind of guy.3.scum 坏人He looks like a nice guy,but judging by his friends, he is probablly really scum

1.hold someone's hand 帮助某人When I was at home,my parents would hold my hand through everything.It was hard to start doing something on my own.2. be hard on someone 对某人要求高When it comes to study,I'm really hard on myself because I want to get into a top graduate school.-Sometimes I think we might be too hard  on our kids.                                       -Anything wrong? We want them to excel.3.flying color  -How's your exam?-I passed it with flying colors!

sucker for(somebody love somthing)I'm always a sucker for chocolate.I'm on a diet, but I'd love to try a piece.1.root for someone 大力支持某人Good luck with your interview.I'll be rooting for you!2.rat someone out  出卖某人,揭发某人   rat 叛徒There‘s a spy in our company,we need to rat him out.Ikonw Lily cheated on the tese.Should we rat her out? 

handle the truth1.skedaddle 忙去吧，该干什么干什么去Kids，have a good time.Go on skedaddle.It's time to skedaddle.Is everyone packed?2.If you see any violations I want little klepto picked up as soon as that plane hits pavement.kleptomaniac 有偷窃癖者Stay away from here,she is a klepto.Hi mom,cool please.I just took an extra teabag-it's not like I'm a klepto or anything.3.stab someone in the back 背后捅某人刀子I can't believe one of my best friends could have stabbed me in the back.Did you know what's going on?They told me they would back me up,but as a matter of that, they stabbed me in the back.