a的中文翻译及用法_趣趣abc孩子的在线欧美外教一对一

　　英音 [ei,ə] ;

　　美音 [ei,ə] ;

　　art.

　　1.（非特指的）一（个）

　　2.（同类事物中）任何一个

　　3.每一（个）

　　4.某一种

　　5.（用于某些物质名词前）一种

　　6.（=the same）同一（个）

　　7.（与否定词连用，相当于any）

　　8.【口】（用于虚拟语气，=have）

　　pron.【方】

　　1.他，她，它

　　2.他们，她们，它们

　　3.我

　　abbr.

　　1.（用于旅行时刻表）arrive

　　2.（用于日期前）before

　　英语解释

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

　　· one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)

　　· any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes

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

　　· a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation

　　· the blood group whose red cells carry the A antigen

　　· the 1st letter of the Roman alphabet

　　例句

　　· Dance jazz跳爵士舞

　　· We shall stave it out,no matter how difficult it may be.不管多么困难，我们一定要奋斗到底。

　　· Prefer doing to talking喜欢做而不喜欢说

　　· Wherever practicable, validation shall be completed prior to the delivery or implementation of the product.只要可行,确认应在产品交付或实施之前完成.

　　· In this section, we consider transfer pricing in those situations where intermediate markets are strong and well defined.在这里,我们讨论存在明确且竞争激烈的中间市场时,内部转移计价的问题。

　　· It goes without saying that work without rest will do harm to health. In other words, we had better take sufficient recreation to relax after work.不需说，工作而不休息会对健康有害的。换句话说，我们好工作后，从事充足的消遣来轻松一下。

　　· For obtaining a visa, I am required to show concrete evidence of sufficient financial resources for two years of study in the United States.要获准签证，我必须出示在美国读二年书所具有足够经济来源具体证据。

　　· cylindrical gearing圆柱齿轮传动

　　· When the matriarch dies, one of the oldest offspring takes her place当领头的母象死后，由另一头年长的后代母象取而代之。

　　· To one's surprise; to one's amazement使..感到震惊