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N-SING
程度;地步
If you are talking about how great, important, or serious a difficulty or situation is, you can refer to the extent of it.
例句
The government itself has little information on the extent of industrial pollution...
政府本身几乎不了解工业污染的程度。
Growing up with him soon made me realise the extent of his determination...
和他一起长大让我很快意识到他有多么坚定。
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N-SING
范围;面积;大小
The extent of something is its length, area, or size.
例句
Their commitment was only to maintain the extent of forests, not their biodiversity.
他们仅承诺维持现有森林面积，并不保证林区生物的多样性。
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PHRASE
在很大程度上/ 在某种程度上/在一定程度上
You use expressions such as to a large extent ,to some extent, or to a certain extent in order to indicate that something is partly true, but not entirely true.
例句
It was and, to a large extent, still is a good show...
它过去是个好节目，现在在很大程度上仍是个好节目。
To some extent this was the truth...
在某种程度上，这是事实。
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PHRASE
到何种程度/到那种程度/到…的程度
You use expressions such as to what extent ,to that extent, or to the extent that when you are discussing how true a statement is, or in what ways it is true.
例句
It's still not clear to what extent this criticism is originating from within the ruling party...
目前仍不清楚这种批评有多少是来自执政党内部。
To that extent they helped bring about their own destruction...
他们正是如此推波助澜，导致了自己的毁灭。
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PHRASE
（表示强调）到…的地步，到…的程度
You use expressions such as to the extent of ,to the extent that, or to such an extent that in order to emphasize that a situation has reached a difficult, dangerous, or surprising stage.
例句
He said he didn't like the president, but not to the extent of wanting to kill him...
他说他不喜欢总统，但是还没有到想要刺杀他的地步。
I became pregnant but this man was very violent towards me to the extent that I lost our baby...
我怀孕了，但是这个男人对我非常粗暴，致使我流产了。