The makers of the nerve poison include the mambas and the cobras and their venom is called neurotoxic.

be called / known as ^{被称做、称为}

• The coastal town is called Seaside, due to its location right by the ocean. ^{这个沿海小镇被称为海边镇，因为它就在海边。}
• The largest galaxy in the cluster is known as the Andromeda Galaxy. ^{星系团中最大的星系被称为仙女座星系。}

Vipers (adders) and rattlesnakes manufacture the blood poison, which is known as haemolytic.

被称为是…

• The terrible secret is called 'a skeleton in the cupboard '. 
• Because of this, they were known as 'prize-fighters'.
• People who work in offices are frequently referred to as 'white collar workers' for the simple reason that they usually wear a collar and tie to go to work.
• The president should be addressed as 'Mr. President'.

Both poisons are unpleasant, but by far the more unpleasant is the blood poison. ^{读出来有押韵效果}

by far ^{(used with comparative or superlative adjectives or adverbs) by a great amount...得多（修饰比较级或最高级）}

• The last of these reasons is by far the most important.
• The second half of his voyage was by far the more dangerous part, during which he sailed round the treacherous Cape Horn.

Both books are interesting, but by far the more interesting is ‘Harry Potter’. ^{两个东西都...，但是更...的多得是...}

It is said that the nerve poison is the more primitive of the two, that the blood poison is, so to speak, a newer product from an improved formula.

so to speak ^{好像，仿佛，可以说是}

• He is, so to speak / as it were, a walking dictionary.
• The Han nationality and the minority nationalities are all, so to speak / as it were, members of the same family.

Reading is thought to be a kind of conversation between the reader and the text. The reader puts questions, as it were, to the text and gets answers. In the light of these he puts further questions, and so on. ^六级阅读

formula ^{n.a list of the substances used to make a medicine, fuel, drink etc, showing the amounts of each substance that should be used 配方，处方}

• Our products are handmade from traditional formulas.
• The formulas for the drinks are closely guarded secrets.

Be that as it may, the nerve poison does its business with man far more quickly than the blood poison.

Be that as it may ^{used to mean that you accept that a piece of information is true but it does not change your opinion of the subject you are discussing = despite that 尽管如此（让步状语倒装）}

• Be that as it may, our expenditure is bound to increase.
• “I’m tired.” “Be that as it may, you have to do some work.” 
• Be that as it may, we do not trust him anyway. ^{尽管如此，我们还是不信任他。}
• The report indicates sales are down this quarter; be that as it may, we should still invest in marketing next year. ^{报告显示本季度销售额有所下降；尽管如此，我们明年仍应投资于营销。}
• Come what may, we'll always stand by your side. 
• Come wind or rain, I will go.

do business with ... ^{做生意；（派生、比喻）发挥效力}

• I was fascinated by the different people who did business with me. 
• You will stand to lose if you do business with him. ^{跟他作生意你是要吃亏的。}
• I'd rather not do business with them. ^{我宁愿不和他们做生意了。}

This, however, means nothing.

mean nothing ^{be not important 不重要}

• Time meant nothing to me while I was travelling.
• Your words mean nothing. ^{你的语言毫无意义。}
• All the successes and triumphs they achieved mean nothing today. ^{他们所取得的成功和胜利在今日也毫无意义。}

Snakes did not acquire their poison for use against man but for use against prey such as rats and mice, and the effects on these of viperine poison is almost immediate.

the effect / influence / impact of ... on / upon ... ^{...对...的效果/影响}

• In the organization of industrial life the influence of the factory upon the physiological and mental state of the workers has been completely neglected.