chalk

noun

1. a piece of calcite or a similar substance, usually in the shape of a crayon, that is used to write or draw on blackboards or other flat surfaces

2. an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride
used as a stimulant to the nervous system and as an appetite suppressant

Synonym: methamphetaminemethamphetamine hydrochlorideMethedrinemethdeoxyephedrinechicken feedcrankglassiceshabutrash

3. a pure flat white with little reflectance

4. a soft whitish calcite

verb

1. write, draw, or trace with chalk

1. 白垩
Chalk is a type of soft white rock. You can use small pieces of it for writing or drawing with.

e.g. ...the highest chalk cliffs in Britain...
英国最高的白垩悬崖
e.g. Her skin was chalk white and dry-looking.
她的皮肤看上去苍白发干。

2. 粉笔
Chalk is small sticks of chalk, or a substance similar to chalk, used for writing or drawing with.

e.g. ...somebody writing with a piece of chalk.
在用粉笔写字的某人
e.g. ...drawing a small picture with coloured chalks.
用彩色粉笔画一幅小图

3. 用粉笔画(或写)
If you chalk something, you draw or write it using a piece of chalk.

e.g. He chalked the message on the blackboard...
他用粉笔将消息写在黑板上。
e.g. There was a blackboard with seven names chalked on it.
黑板上用粉笔写着7个人名。

4. 截然不同;完全不同
If you say that two people or things are like chalk and cheese, you are emphasizing that they are completely different from each other.

e.g. The two places, he insists, are as different as chalk and cheese...
他坚持说那两个地方有天壤之别。
e.g. We are very aware of our differences, we accept that we are chalk and cheese.
我们非常清楚相互之间的差异，并且承认自己是截然不同的两类人。

5. (用于加强语气)绝对
You can use by a long chalk to add emphasis to something you are saying.

e.g. The rest of us hadn't finished our drinks, not by a long chalk.
我们其余几个人还没有喝完，还差得远呢。

相关词组：chalk up

1. 白垩：5.石粉 石灰石(Umestone)、白垩(chalk)、方解石(calcite)、白云石(dolomite)等均系天然碳酸钙,还含有少量其他矿物质元素,经过饲料卫生质量标准检验,均可作为石粉原料.

2. chalk的意思

2. 巧克：评估球杆一定要试打过后才能下评断,而试打时一定要确实的抹上巧克(chalk)从拉杆、推杆、下塞、长距离击球、长距离台边球打击...等等,最好再多试几下你最拿手的出杆打击和拿手球,以判定该球杆是否符合你大部分的需求.

3. 乔克：IMF亚太区负责人乔克(Chalk)表示,在全球经济环境日益陷入困境的情况下,允许人民币加快升值就变得更加重要. 国际贸易的放缓将使本地经济更加依赖内部消费. 乔克称,当前的全球环境和世界经济的下滑速度已经使中国改革汇率体制,