英汉词典

a- 基本解释

pref.

非；不；无；没有

英英释义

a-[ ə ]

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 unitA

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 factoraxerophtholA

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 monophosphateA

(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA

同义词：adenineA

the basic unit of electric current adopted under the Systeme International d'Unites

同义词：ampereampA

the 1st letter of the Roman alphabet

同义词：Aletter a

the blood group whose red cells carry the A antigen

同义词：Atype Agroup A

a- 相关例句

双语例句

1. Guy was greedy, amoral and dishonest.
   盖伊贪心、不讲道德、又不诚实。
2. Henry used to be totally apolitical,but I think he is now politically more aware.
   基辛格过去完全不问政治，但是，我认为现在他政治上比较敏锐了。

权威例句

The CES-D Scale: A Self-Report Depression Scale for Research in the General Population
Very Deep Convolutional Networks for Large-Scale Image Recognition
A decision-theoretic generalization of on-line learning and an application to boosting
Prevention of coronary and stroke events with atorvastatin in hypertensive patients who have average or lower-than-average cholester...
Refinement of Macromolecular Structures by the Maximum-Likelihood Method
Profiling of complex microbial populations by denaturing gradient gel electrophoresis analysis of polymerase chain reaction-amplifie...
32 – Rapid and Efficient Site-Specific Mutagenesis without Phenotypic Selection
Fronts propagating with curvature-dependent speed: algorithms based on Hamilton-Jacobi formulations
Measurement of Protein Using Bicinchoninic Acid,Anal. Biochem. 150, 76-85
Collaborative meta-analysis of randomised trials of antiplatelet therapy for prevention of death, myocardial infarction, and stroke ...