例句： Their opinions on art are simply for the birds.
他們對(duì)藝術(shù)的見(jiàn)解真是荒唐可笑。
beat it 叫人 " 走開(kāi) " 的 口語(yǔ) ，和 "Be off! 差不多，不過(guò)比后者更流行。
例句： He kept on bothering me, so I told him to beat it.
他不停地?zé)┪?，因此我叫他走開(kāi)。

beat ones brains (out) 　指做事困難， " 傷透了腦筋 "
例句： I beat my brains (out) to get a job.
為了找尋工作，我傷透了腦筋。
beat sb to the draw 　搶先某人行動(dòng)

例句： Mary wanted to buy that painting by Picasso, but another millionaire beat her to the draw.
瑪麗想買(mǎi)畢加索的那幅畫(huà)，不過(guò)另一個(gè)百萬(wàn)富翁捷足先登了。
beat someone by miles 　遠(yuǎn)強(qiáng)于某人
例句： When it comes to fishing, I beat him by miles.
講到釣魚(yú)，我比他棒得多。

beef 口語(yǔ)上常用來(lái)指 " 抱怨 " 或 " 發(fā)牢騷 " ;作動(dòng)詞時(shí)后面跟 about.
例句： Tell me what's your beef-
你抱怨什么-

before you know it 口語(yǔ)為 " 很快 " 。
例句： I come back before you know it.來(lái)源：考試大
我很快就會(huì)回來(lái)。

behave yourself 　勸人要有禮貌和行為檢點(diǎn)，意思相同的口語(yǔ)還有 "Watch you manner.""Watch your P's and Q's". 和 "Don't get fresh."
例句： Please behave yourself before the guests.
在賓客之前你檢點(diǎn)一些。

behind bars 　坐牢
例句： The judge will put him behind bars for at least two years. 法官最低限度也會(huì)判他坐兩年牢。
behind the scenes ( behind the curtain )　 幕后

例句： He is the man behind the scenes.
他是幕后人物。
between ourselves 秘密地說(shuō)

例句： Between ourselves, there are no secrets.
咱們私下說(shuō)說(shuō)，沒(méi)什么秘密。
beyond the seas 在國(guó)外，在海外

例句： He had a good time when he was beyond the seas.
他在國(guó)外時(shí)曾過(guò)得很快活。
butt in 　插手，介入

例句： Pardon me for butting in on your conversation, but this is important.
請(qǐng)?jiān)徫掖驍嗔四銈兊恼勗?，不過(guò)這件事非常重要。
by and large 　大體上，總的看來(lái)

例句： I cannot totally take your point ， but by and large I think yours is reasonable.
我不能完全同意你的觀點(diǎn)，但大體上你的觀點(diǎn)是有道理的。