3 sentences

1. 他在海边的疗养院休养了两个月。

   tā zài hǎi​biān de liáo​yǎng​yuàn xiū​yǎng le liǎng gè yuè.

   He spent two months recuperating at a sanatorium by the sea.

   Source: Dong Chinese Dictionary

2. 经过一段时间的休养，他的伤口已经完全痊愈了。

   jīng​guò yī duàn shí​jiān de xiū​yǎng, tā de shāng​kǒu yǐ​jīng wán​quán quán​yù le.

   After a period of rest and recovery, his wound has completely healed.

   Source: Dong Chinese Dictionary

3. 医生建议他去海边休养一段时间，以便尽快恢复体力。

   yī​shēng jiàn​yì tā qù hǎi​biān xiū​yǎng yī duàn shí​jiān, yǐ​biàn jǐn​kuài huī​fù tǐ​lì.

   The doctor suggested he go to the seaside to recuperate for a while to recover his strength as soon as possible.

   Source: Dong Chinese Dictionary