5 sentences

1. 他在加固防御措施。

   tā zài jiā​gù fáng​yù cuò​shī.

   He's shoring up his defenses.

   Source: OpenSubtitles

2. 抗洪期间，政府征调民工加固堤坝。

   kàng​hóng qī​jiān, zhèng​fǔ zhēng​diào mín​gōng jiā​gù dī​bà.

   During the flood control period, the government mobilized workers to reinforce the levees.

   Source: Dong Chinese Dictionary

3. 大雨过后，工人们正在忙着加固河堤。

   dà​yǔ guò​hòu, gōng​rén men zhèng​zài máng zhe jiā​gù hé dī.

   After the heavy rain, workers are busy reinforcing the river embankment.

   Source: Dong Chinese Dictionary

4. 矿工们正在加固矿井里的木头支柱。

   kuàng​gōng men zhèng​zài jiā​gù kuàng​jǐng lǐ de mù​tou zhī​zhù.

   The miners are reinforcing the wooden pillars inside the mine.

   Source: Dong Chinese Dictionary

5. 台风来临前，村民们加固了房屋的屋顶。

   tái​fēng lái​lín qián, cūn​mín men jiā​gù le fáng​wū de wū​dǐng.

   Before the typhoon arrived, the villagers reinforced the roofs of their houses.

   Source: Dong Chinese Dictionary