a 基本解释
art.一（个）；每一（个）；任一（个）；
英英释义
a[ ei ]
n.a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation同义词：angstromangstrom unit
any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes同义词：vitamin Aantiophthalmic factoraxerophthol
one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)同义词：deoxyadenosine monophosphate
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA同义词：adenine
the basic unit of electric current adopted under the Systeme International d'Unites"a typical household circuit carries 15 to 50 amps"
同义词：ampereamp
the 1st letter of the Roman alphabet同义词：letter a
the blood group whose red cells carry the A antigen同义词：type Agroup A
a 相关例句
双语例句
用作冠词(art.)- There is a pen on the table.
桌子上有一支笔。 - We have a problem.
我们有个问题。 - I can only carry two at a time.
我一次只能带两个。 - Let's go to a Chinese restaurant.
我们去一家中餐餐馆。 - A cat is an animal.
猫是动物。
权威例句
A Brief History of NeoliberalismStatecharts: a visual formalism for complex systemsMarching cubes: A high resolution 3D surface construction algorithmMarching cubes: a high resolution 3D surface construction algorithmA new technique for the assay of infectivity of human adenovirus 5 DNA.A Gene-Expression Signature as a Predictor of Survival in Breast Cancer — NEJMMOLMOL: a program for display and analysis of macromolecular structures.A population genetic software for exact test and ecumenicism: GENEPOP, version 3.4A decision-theoretic generalization of on-line learning and an application to boostingValidation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes to antirheumatic ...
