3 sentences

1. 与棕熊和黑熊不同，北极熊并不冬眠。

   yǔ zōng​xióng hé hēi​xióng bù​tóng, běi​jí​xióng bìng​bù dōng​mián.

   Unlike black and brown bears, polar bears do not hibernate.

   Source: CCMatrix

2. 美国境内95%的棕熊栖息在阿拉斯加州。

   měi​guó jìng​nèi95% de zōng​xióng qī​xī zài ā​lā​sī​jiā​zhōu.

   95% of the brown bear population in the United States live in Alaska.

   Source: CCMatrix

3. 欧洲棕熊在该地区已经有一个多世纪没有出现过了。

   ōu​zhōu zōng​xióng zài gāi dì​qū yǐ​jing yǒu yī​ge duō shì​jì méi​yǒu chū​xiàn guo le.

   European brown bears haven’t been seen in that region for more than a century.

   Source: CCMatrix