nineteenth

• 序数词，表示第十九位；常用于指19世纪（1800年代）或某序列中的第十九个。

An adjective referring to the number 19 in a sequence, often used to describe the century (1800s) or position.

1. Position in sequenceA2formal

   Coming immediately after the eighteenth in a series or order.

   第十九

   • She finished in nineteenth place in the race.
   • The nineteenth chapter of the book is the most exciting.
   • He celebrated his nineteenth birthday with a small party.

• 序数词，表示序列中的第十九位；也可作名词，指第十九个或十九分之一。

A noun referring to the position or rank that is number 19 in a sequential order.

1. Position 19 in a seriesB1formal

   The element or item that occupies the number 19 position in a sequential order.

   第十九个

   • He finished in the nineteenth place in the race.
   • The nineteenth chapter of the book is the most exciting.
   • She was the nineteenth person to sign up for the event.

• 表示十九个事物、人或计数单位的基数词；质数；也可作数词、形容词或名词使用。

The cardinal numeral representing the quantity of nineteen units; the nineteenth positive integer following eighteen; a prime number. Also functions as a noun (denoting the symbol, quantity, or group of nineteen), adjective/determiner (modifying nouns to indicate quantity), and pronoun (standing in for a plural noun phrase).

1. Cardinal numeral: the number 19A1formal

   Used to denote a quantity of nineteen persons or things; the nineteenth positive integer in the sequence of natural numbers; a prime number; represents a nineteenfold quantity in counting, mathematics, and everyday usage.

   基数词：数字19

   • There are nineteen players on each cricket roster.
   • She scored nineteen points in the chess tournament.
   • Nineteen plus nineteen equals thirty-eight.
   • The lecture starts at nineteen hundred hours.
   • He collected nineteen vintage coins this year.

2. Noun: the number, symbol, or group of nineteenA2formal

   A noun referring to the cardinal number nineteen; the numeral symbol 19 or XIX; a set, collection, or group consisting of nineteen items; a playing card displaying nineteen (in extended decks); a team or ensemble of nineteen members.

   名词：十九这个数、符号或一组十九个

   • The number nineteen marks the end of the teenage years.
   • Circle the nineteens in this dataset.
   • The ensemble consists of a nineteen of vocalists.
   • In some card variants, the nineteen holds special scoring value.
   • The historical document lists a nineteen of delegates.

3. Adjective/Determiner: amounting to nineteenA1formal

   Used attributively before a noun to indicate that the quantity or number of the noun is nineteen; modifies plural countable nouns to specify exact quantity.

   形容词/限定词：数量为十九

   • They booked a nineteen-day trek across the mountains.
   • We need nineteen additional microphones for the auditorium.
   • The laboratory protocol requires nineteen milliliters of the solution.
   • She has nineteen years of experience in architectural design.
   • Nineteen regional departments participated in the audit.

4. Pronoun: nineteen people or things (plural)B1formal

   Used as a pronoun to refer to nineteen previously mentioned or understood persons or things; takes plural verb agreement.

   代词：十九个人或事物

   • Ninety applied, but only nineteen were accepted into the cohort.
   • I invited eighty guests; nineteen confirmed their attendance.
   • How many seats should we reserve? — Nineteen will be ideal.
   • Several startups pitched, but nineteen advanced to the demo day.
   • Of the manuscripts evaluated, nineteen were selected for publication.