tripling

基本解释

Meanwhile, there's a bigger debate about tuition fees tripling in the future.
同时，还有一个关于未来大学学费将上涨三倍的争论。
But even for nuclear to generate a single wedge would require tripling our current nuclear capacity.
但即使对于核能来说，形成一个楔子需要的核电产能是目前的三倍。
If this phenomenon, called "outgassing," were to kick in, it could inundate the atmosphere with carbon dioxide, perhaps doubling or tripling the effect of the past century of human industry.
如果这种被称为“出气”的现象开始发挥作用，它可能以二氧化碳淹没大气，也许比过去一个世纪人类工业的影响还要大一倍或两倍。

Mr.Wen said trade has soared in modern times, more than tripling between 2004 and last year, when it topped $132 billion.
But they can't deal with a tripling, even more than a doubling of rent.
但他们没办法承受三倍的租金，甚至无法承受多于两倍的租金。
纽约的负面变化 - SpeakingMax英语口语达人
He proposed tripling humanitarian aid to Pakistan, but warned military assistance would be cut if Islamabad did not do enough to fight terrorists.

It will compound between now and retirement, but it will fall short of tripling.
FORBES: Why Roth?

Triple means consisting of three things or parts.
If something triples or if you triple it, it becomes three times as large in size or number.
If something is triple the amount or size of another thing, it is three times as large. 3