2 sentences for 引入 (yǐn​rù — introduce)

1. 麋鹿曾在中国野外灭绝，后来才被重新引入。

   mí​lù céng zài Zhōng​guó yě​wài miè​jué, hòu​lái cái bèi chóng​xīn yǐn​rù.

   The Milu deer once became extinct in the wild in China and was only later reintroduced.

   Source: Dong Chinese Dictionary

2. 为了增加趣味性，作者在第二章引入了一个神秘角色。

   wèi​le zēng​jiā qù​wèi​xìng, zuò​zhě zài dì'èr zhāng yǐn​rù le yī gè shén​mì jué​sè.

   To add an element of interest, the author introduced a mysterious character in the second chapter.

   Source: Dong Chinese Dictionary