4 sentences

1. 适当的运动可以促进身体的血流。

   shì​dàng de yùn​dòng kě​yǐ cù​jìn shēn​tǐ de xuè​liú.

   Proper exercise can promote blood flow in the body.

   Source: Dong Chinese Dictionary

2. 适当的体育锻炼有助于身体保健。

   shì​dàng de tǐ​yù duàn​liàn yǒu​zhù​yú shēn​tǐ bǎo​jiàn.

   Proper physical exercise is good for maintaining health.

   Source: Dong Chinese Dictionary

3. 我们需要在适当的时间讨论这个问题。

   wǒ​men xū​yào zài shì​dàng de shí​jiān tǎo​lùn zhè gè wèn​tí.

   We need to discuss this issue at an appropriate time.

   Source: Dong Chinese Dictionary

4. 适当的娱乐活动可以调剂紧张的学习生活。

   shì​dàng de yú​lè huó​dòng kě​yǐ tiáo​jì jǐn​zhāng de xué​xí shēng​huó.

   Appropriate recreational activities can help balance a stressful academic life.

   Source: Dong Chinese Dictionary