一个字也不认识

not know a B from a buffalo/not know a B from a battledore/not know B from a battledore/not know B from a buffalo

疾病多是由食物传染。比喻应该注意饮食卫生。同“病从口入”。

Illness enters through the mouth

不住口地称赞。

Praised without pause

指设宴款待远来的客人，以示慰问和欢迎。

give a dinner of welcome welcome and help wash off the dust to treat sb. to a dinner on arriving

没有成本的买卖

Business without foundation

形容用各种理由或方式请求或劝说。

try every possible way to persuade

碍：滞碍。本是佛教用语，指菩萨为人说法，义理通达，言辞流利，后泛指口才好，能辩论。

have a sliver tongue

满纸都是废话。形容文章空洞，毫无内容。

full of empty phrases on a scrap of paper

指四肢百体的四时病痛。泛指各种疾病。

Four hundred and four illnesses

千千万万人说同样的话。比喻意见一致。

Spoken unanimously by all

搬弄口舌

Deceitful mouth and tongue

语：言语，也指文句。语句平淡，没有令人震惊的地方。

Words that do not shock people

花千金高价去购买千里马的骨头，比喻爱惜人才

make a fervent quest for talent spend a thousand pieces of gold to buy the bones the eagerness of seeking the worthy

形容端庄严肃。

Complete and precise

花费千金，买得一笑。旧指不惜重价，博取美人欢心。

spend a thousand ounces of gold to buy a smile smile of a woman spend much money for temporary pleasures

比喻为达到某种目的，在某些问题上横生枝节，或借题发挥，扩大事态。

make a big fuss about something

象黄金宝石那样珍贵的话语。比喻可贵而有价值的劝告。

Words of gold and stone

本意是出言便成为规范，后多用以形容文思敏捷。

Speak in well-formed sentences

形容叙述或描写生动逼真。

(of an event or thing) give a vivid and lifelike description

指老人与小孩

young and old/old and young