revenue 幾時要加 s?

revenue
1. (國家的)歲入;稅收[U]
Tax revenues increased last year.
去年稅收增加了。
2. 收入,收益[U][C]
Rent is one form of revenue.
房租是一種收入。
3. 各項收入,總收入[P]
The Board of Directors was concerned at the drop in the company's revenues.
董事會對公司總收入的減少甚為關注。
4. 稅務局,稅務署[the S]
* 根據以上的解釋，當revenue這個字解作稅收/總收入/稅務局時，是一定要加s。這與大家平時所學，uncountable noun不用加s不同，revenue在uncountable及作以上解釋的情況下，才要加s。
** 而在收入一項之解釋，就要看是指甚麼的收入。若revenue單解作收入，便是uncountable，不用加s；若revenue用於表示不同項目之收入，便是countable，要加s。
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2007-07-09 20:57:49 補充：
您在我xg的問題，我在此作一點補充："The government should set up a foundation with tax revenue."revenue在此是作收入解釋，原因是tax已經有稅的意思，不用重覆了。

revenue :
[uncountable] also revenues
1 money that a business or organization receives over a period of time, especially from selling goods or services:
Strikes have cost £20 million inlost revenues.
2 money that the government receives from tax:
an increase in tax revenues of 8.4%

You can add "s" after revenue if you are counting more than one type/source of revenues. It is a countable noun.