thirty

音标发音

I know that you'vebeen studying chimpanzees for thirty years now.
我知道你研究黑猩猩至今已有30年了。
Thirty seconds later she reappeared and beckoned them forward.
30秒后她又出现了，示意他们往前来。
The price of a single ticket is thirty-nine pounds.
单程票的价格是39英镑。
By 1973 the government deficit equalled thirty per cent of GNP.
到1973年，政府财政赤字相当于国民生产总值的30%。
He trapped Conn in a corner and pummeled him ferociously for thirty seconds.
他将康恩逼进一个角落，用拳头暴打了他半分钟。

Thirty is the number 30. 30
When you talk about the thirties, you are referring to numbers between 30 and 39. For example, if you are in your thirties, you are aged between 30 and 39. If the temperature is in the thirties, the temperature is between 30 and 39 degrees.
The thirties is the decade between 1930 and 1939. 2030