review p.73

cap=head

cap   --> cip

capit --> cipit

 

precipice   (ˈprɛsɪpɪs)

pre-cip(head)-ce

n. [a very steep or overhanging place ]

  考古:defile:narrowness=precipice:steepness 小道•狹窄=懸崖•陡峭

 

 

字源:1598, "fall to great depth," from Fr. précipice,  from L. præcipitium  "a steep place," lit. "a fall or leap," from præceps  (gen. præcipitis ) "steep, headlong, headfirst," from præ-  "forth" + caput  "head" (see head). Meaning "steep face of rock" is recorded from 1632.

像跳水一樣,頭往前栽下

 

 

 

 

 

 

 

precipitate

pre-cipit(head)-ate

v. [to throw violently]

  ps. 這意思也有adj的用法, falling, flowing, or rushing with steep descent

  因此,precipitate有 魯莽的 [ done without care or thought]意思

  ex. his precipitate action

 

v. [to bring about especially abruptly]

  ex. One small error precipitated the disaster.

v. [to cause to separate from solution or suspension]

  ps. 也可以當名詞,a substance separated from a solution or suspension by chemical or physical change usually as an insoluble amorphous or crystalline solid.

 

 

 

 

 

 

 

 

precipitant

pre-cipit-ant

n. [a precipitating agent especially : one that causes the formation of a precipitate]

  考古: solvent <> precipitant

 

  wiki :A solvent (from the Latin solvere, "loosen") is a liquid, solid, or gas that dissolves another solid, liquid, or gaseous solute, resulting in a solution that is soluble in a certain volume of solvent at a specified temperature.

 

AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
AgNO3(aq) + NaI(aq) → AgI(s) + NaNO3(aq)

 

 

 

 

 

 

 

 

precipitation

pre-cipit-ation

n.[ the quality or state of being precipitate : hastiness ;  an act, process, or instance of precipitating especially : the process of forming a precipitate ]

n.雨﹑ 雨夾雪﹑ 雪﹑ 雹子等的降落 [a deposit on the earth of hail, mist, rain, sleet, or snow]

 

from wiki: In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravity.

It occurs when a local portion of the atmosphere becomes saturated with water vapour and the water condenses.

Two processes, possibly acting together, can lead to air becoming saturated: cooling the air or adding water vapour to the air.

Precipitation forms as smaller droplets coalesce via collision with other rain drops or ice crystals within a cloud. 

 

Long-term mean precipitation by month

 

 

 

 

 

 

 

précis    (ˈpreɪsiː)

n.摘要, 大意, 梗慨, 大綱. [restatement in shortened form of the main points or ideas of a speech or written text; summary]

  ex. she goes in for giving a rapid precis of all her guests.

  example

Synonyms:

abridgment  ...原本出現在p.3的,但我忘記講解了
abstract  p.4
résumé  
summary  

 


      

 

 

 

 

 

precise

pre-cise(cut)  "to cut beforehand"

adj.精確的 [exactly or sharply defined or stated ]

  ex. I  can remember the precise moment when my daughter came to see me and her new baby brother in hospital.

 

 

 

 

 

 

preclude

pre-clude

v.排除 [to prevent the presence, existence, or occurrence of; make impossible; to make impossible by necessary consequence ]

 ex. The insufficiency of the evidence precludes a conviction.

 ex. That sale precludes further development on this site.

 

 

小review 字根:

claus= clos == close

exclude v.

cloister n. [a covered passage on the side of a court usually having one side walled and the other an open arcade or colonnade] p.89

 

 

 

 

 

 

 

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