4 sentences

1. 我祖父是二战时的老兵。

   wǒ zǔ​fù shì èr​zhàn shí de lǎo​bīng.

   My grandfather is a veteran of the Second World War.

   Source: UM-Corpus: News

2. 二战后，香港经济和社会迅速发展。

   èr​zhàn hòu, xiāng​gǎng jīng​jì hé shè​huì xùn​sù fā​zhǎn.

   After World War II, Hong Kong's economy and society developed rapidly.

   Source: CCMatrix

3. 日本的教育制度在二战后进行了改革。

   rì​běn de jiào​yù​zhì​dù zài èr​zhàn hòu jìn​xíng le gǎi​gé.

   The Japanese educational system was reformed after World War II.

   Source: CCMatrix

4. 二战中，这些非洲军队发挥了重要作用。

   èr​zhàn zhōng, zhè​xiē fēi​zhōu jūn​duì fā​huī le zhòng​yào zuò​yòng.

   During World War II these African troops played an important role.

   Source: CCMatrix