How does a blockchain system like a database?

A blockchain smart contract only read committed, cannot read-uncommitted. [1]

A blockchain is a shared append-only distributed database with full replication.

ACID: Atomicity, Consistency, Isolation, and Durability

A smart contract is like an interface to operate the blockchain[……]

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as proof, as evidence, as a girl可以用在句子开头吗?

Children love stories. As evidence/As proof, they fall asleep while listening to music.

请问as proof, as evidence在此处用法正确吗?

中国人把as翻译为“作为”,采用翻译的方法,“作为证据,孩子喜欢边听故事边入睡”看起来没什么问题。

从语法角度,这里as后面跟noun (phrase),修饰整个句子。The part of speech of as is connective or preposition.

Oxford English Dictionary有[……]

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字典里的单数、复数、可数、不可数标记

单数:作主语时,动词用单数形式。冠词用a或the。

复数:作主语时,动词用复数形式。冠词用the或无。

可数:可以加s变复数。然后依照单数、复数规则。

不可数:不可以加s变复数。作主语时,动词用单数形式。冠词用the或无。除非:PEU 120.4, PEU 131

pace [单,不可数]

a pace 不行
the pace 行
pace 行
paces 不行[……]

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雅思听力笔记

当选择题选项是一个列举的时候,对听到的列举项打勾。检查时再选择答案。(真题8 Test 2)

地图题

site entrance:总是在左右方向。(真题6 Test 3)

日期的表达方式,一般只接受两种,如8th August或 August 8th[1]。注意必须加序数词。(非雅思中,美式英语中,序数词是不必要的)

可见:真题16 Test 4

复合词

antibiotics automobile bookkeeper bookshop

bookstore bookshelf checkbook checklist

chil[……]

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名言分析To affect the quality of the day, that is the highest of arts

PEU 92
to do不定式可以做补语。
My ambition was to retire at thirty.

该句式可以用preparatory it,即
It was my ambition to retire at thirty.

该句式类似于 To be or not to be, that is the question。

art
1. [U] 艺术
2. the arts 统称的艺术
3. [C,常复] 人文科学,文科
4. [C] 技能;技术;技巧

因为quote里用的是arts,且没有the,应该取“技能;技术;技巧”之意。可能与[……]

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方位词的介词 [in/on/to] the north

north, south, east, west统称compass point。

of sth

方位词后可以加of sth。当没有of sth时,罗盘方位的原点是隐含的,要读者自行推断。

Houses are less expensive ?? the north than ?? the south. (这里的介词不重要,故隐去)北方的房子比南方便宜。没有of sth,不知道是哪里的北方或南方,要从上下文看。

to

介词to,表示一地在另一地的范围之外,两者可能彼此接壤也可能有一定距离。[1][1]

OALD
to the st[……]

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词语辨析n. fire; v. light, burn

fire

[U] 火焰 in fire

gold is purified in fire.

(引申义)An impassioned sermon about how citizens had to fight the devil every minute of their lives to keep from being fried in fire. 一场慷慨激昂的布道,讲述公民如何在生命的每一分钟都与魔鬼作斗争,以免被火烧死。

[C,U] 火灾

on fire:起火,并形成火灾。也常见于短语中。

in a fire:在一场火灾中

[C] 一堆正在燃[……]

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Directory Opus: file log

File log is visible when you invoke file search (ctrl-f for me), then choose Panel: File log.

For me, the log records operations as old as one year ago, which exposes too much privacy.

Go to Preference -> File Operation -> Log. I believe “Log file functions, at most” can be 500 events or les[……]

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