详细解释
碰
1、(形声。从石,并声。本义:两物相触或相撞)。
2、同本义。
掽,蒲孟切,彭去声,搕掽,撞也。---《字汇》。段注:“今俗谓卒然相遇曰掽。”按,掽是晚起字,今字作“碰”
小车碰到电线杆;鸡蛋碰石头;碰头：磕响头,表示惶恐服罪
碰关：方言。充其量;到了顶点
碰磕：相撞,冲撞。
3、触犯。
俺们这个玉大人真是了不得,赛过活阎王,碰着了就是个死。---《老残游记》
例句
别碰那根电线，不然会触电的。
Don't touch that wire or you'll get a shock.
她实在不想触碰如此令人窘迫的话题。
She really could not touch upon such an indelicate subject.
我不准任何人碰那台钟。
I forbid anyone to touch that clock.
皮尔斯还是毫不动摇，说：“我没碰他。”
Pearce remained adamant, saying "I didn't touch him."
别碰那个盘子，烫手！
Don't touch that plate—it's hot!
我没碰你那辆宝贝车！
I didn't touch your precious car!
别！别碰它！很烫。
No! Don't touch it! It's hot.
我还得在那篇文章上再下点儿工夫，我整整一个星期没有碰它了。
I must do some more work on that article—I haven't touched it all week.
它们大多非常脆弱，一碰就会损坏。
Most of them are extremely delicate and can be damaged by a simple touch.
她走到床边，他伸出手碰了碰她。
She came close to the bed and he put out his hand and touched her.
咱们碰一下各组讨论的情况。
Let's meet and review briefly each group's discussion.
他的妻子不允许他碰酒或烟。
His wife didn't allow him to touch any drink or tobacco.
“不，不，”彼得说，“你不能碰她。”
"No, no," Peter said, "you must not touch her."
他想他宁死也不愿再碰它。
He thought he would rather die than touch it again.
这锅子很热，不要碰它。
The pot is hot. Don't touch it.
不要碰那根电线，很危险。让它保持原样。
Don't touch the wire. It's dangerous. Leave it where it is.
他让警察去碰那辆马车。
He made the policeman touch the cart.
你不能碰那个摄影机。
You mustn't touch the camera.
不许碰他，他是国王！
Touch him not, he is the King!
不要碰这些机器！
Don't touch the machines!
不要碰那张椅子。
Don't touch the chair.
他甚至不去碰它！
He wouldn't even touch it!
别碰我的怪兽！
Don't touch my monsters!
我应该碰地吗？
Should I touch the ground?
别碰那朵花！
Don't touch the flower!
别碰水。
Don't touch water.
我可再也不想碰那种麻烦事儿了。
I don't want any more of that heavy stuff.
最好忍住好奇心，别碰鸟巢。
It is best to stifle curiosity and leave birds' nests alone.
我告诉过你—别碰我的东西！
I've told you before—leave my things alone!
他亲昵地碰了碰她的面颊。
He touched her cheek familiarly.