3 sentences

1. 陆海空三军正在举行联合演习。

   lù hǎi kōng sān​jūn zhèng​zài jǔ​xíng lián​hé yǎn​xí.

   The army, navy, and air force are conducting joint exercises.

   Source: Dong Chinese Dictionary

2. 这个码头是当地重要的水陆交通枢纽。

   zhè gè mǎ​tou shì dāng​dì zhòng​yào de shuǐ lù jiāo​tōng shū​niǔ.

   This pier is an important local hub for water and land transportation.

   Source: Dong Chinese Dictionary

3. 陆先生是我们的新老师。

   Lù xiān​sheng shì wǒ​men de xīn lǎo​shī.

   Mr. Lu is our new teacher.

   Source: Dong Chinese Dictionary