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01
в
used when we want to talk about a person or thing for the first time or when other people may not know who or what they are
Примеры
She bought a new book yesterday.
Она купила новую книгу вчера.
1.1
неопределенный артикль
used before a noun when we are not talking about a specific person or thing
Примеры
He has a problem that needs solving.
У него есть проблема, которую нужно решить.
02
один
used to show someone or something belongs to a group or type
Примеры
He is a member of a sports club.
Он член спортивного клуба.
01
нота ля, ля
the musical pitch A, which is a specific note in the diatonic scale commonly used in Western music
грамматическая информация
статус одушевлённости
неодушевлённое
морфологический состав
простое
исчисляемое
форма множественного числа
A's
собственное
02
ангстрем, единица длины
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
03
один, группа крови A
the blood group whose red cells carry the A antigen
04
первая буква римского алфавита, буква А
the 1st letter of the Roman alphabet
05
аденин, один из четырех нуклеотидов
one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
06
аденин, пуриновое основание
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
