4 sentences

1. 海龟在沙滩上产卵。

   hǎi​guī zài shā​tān shàng chǎn​luǎn.

   Sea turtles lay their eggs on the beach.

   Source: Dong Chinese Dictionary

2. 海龟的寿命很长。

   hǎi​guī de shòu​mìng hěn cháng.

   Sea turtles have a long lifespan.

   Source: Tatoeba

3. 海龟船没有受损，我松了一口气。

   hǎi​guī chuán méi​yǒu shòu​sǔn, wǒ sōng le yī kǒu qì.

   I'm relieved that the turtle ships weren't damaged.

   Source: OpenSubtitles

4. 他是个回国创业的海龟。

   tā shì gè huí​guó chuàng​yè de hǎi​guī.

   He is a 'sea turtle' (a returnee) who came back to start a business.

   Source: Dong Chinese Dictionary