反义同源(也有词汇界前辈称之为反义同根，亲们知道是一个东东就好了哈。）
下来 下去 上来 上去 烟头 烟屁股 出神入神
买卖 hire fire

Montblanc blac= blanc
在那1500年前的古英语中呀，black and white即黑与白几乎就是一个单词：黑色是blaec，白色是blac！

背景知识
Montblanc International (GmbH) 万宝龙国际是历峰集团旗下位于德国的一家精品钢笔、手表与配件的制造商。以「白色六角星」商标作为识别。
Mont实际就是mountain，即山，blanc就是white白色了，所以Montblanc是White Moutain白山之意，品牌理念来自欧洲积雪覆盖的指欧洲最高峰勃朗峰。

勃朗峰（法语：Mont Blanc，意大利语：Monte Bianco，意为白色之山），又译为：白朗峰，是阿尔卑斯山的最高峰，位于法国的上萨瓦省和意大利的瓦莱达奥斯塔的交界处。勃朗峰的最新高度为海拔4810.90米（2007年9月15日），它是西欧的最高峰。

white与wheat是同源的，面粉是白色滴。

blank[blæŋk]
empty or clear, or containing no information or mark
a space in a piece of writing or on a form, left empty for information to be added:
something not yet marked or finished, such as a key not yet cut into a finished shape
showing no understanding or no emotion in your facial expression
adj. 空白的；空虚的；单调的
n. 空白；空虚；空白表格
vt. 使…无效；使…模糊；封锁
vi. 消失；成为空白

词组短语
look blank
脸上现出惶惑(或惊讶)的样子
(前途等)暗淡，空虚

blanket['blæŋkit]
et是指小后缀，所谓毛毯最初指“a little white cloth”，即“一小块白布”
a flat cover made of wool or similar warm material, usually used on a bed
to cover something completely with a thick layer
including or affecting everything, everyone, or all cases, in a large group or area:
n. 毛毯，毯子；毯状物，覆盖层
adj. 总括的，全体的；没有限制的
vt. 覆盖，掩盖；用毯覆盖

短语:
born on the right side of the blanket [口语] 正式结婚所生的
born on the wrong side of the blanket [口语]私生的，非婚生的
throw a wet blanket on(或over) 对…泼冷水；使扫兴；使锐气受挫折[亦作 put a wet blanket on]

例句
The helicopter started down, and immediately they were blanketed in fog.
直升飞机开始降落并且他们立即被笼罩于雾中。
Commercial books blanket the market.
商业化的图书充斥市场。

bleak[bli:k]
(of a situation) not hopeful or encouraging
(of the weather) cold and unpleasant
(of a place) bare, empty or with no pleasant features
adj. 阴冷的,荒凉的,无遮蔽的；黯淡的，无希望的；冷酷的；单调的;[英国方言]苍白的，无血色的

例句
“Life in the Aran Islands has always been bleak and difficult”(&b{John Millington Synge})
“艾伦群岛的生活一直是困苦不堪的”(约翰·米林顿·辛格)

绯闻女孩第2季第18集
Well, the headmistress told me my fate at yale is sealed.
So the question is, how do I make your fate as bleak as mine?
那么，女校长告诉我我的命运就是被耶鲁拒之门外。
问题是，我该怎么让你和我一样悲凉收场？

麻省理工公开课 - 固态化学导论课程节选
This is looking bleak, people.
这看上去没有希望了，同志们。

bleach[bli:tʃ]
to make sth white or pale by a chemical process or by the effect of sunlight; to become white or pale in this way
a chemical that is used to make sth become white or pale and as a DISINFECTANT (= to prevent infection from spreading)
vt. 使漂白，使变白
vi. 变白，漂白
n. 漂白剂

例句
Mary's face was brown and the sun had bleached the ends of her hair.
玛丽的脸色是棕色的，且太阳已晒白了她的发梢。

blanch[blɑ:ntʃ, blæntʃ]
~ (at sth) (written) to become pale because you are shocked or frightened
to prepare food, especially vegetables, by putting it into boiling water for a short time
v漂白；（使）变白；(因疾病、恐惧、饥饿或寒冷等)使(脸色等)变白(或变得苍白)

例句
The very thought of going make her blanch.
一想到去就使她脸色煞白。
The great shock had blanched her cheeks of their natural colour.
巨大的震惊使她双颊发白。