4 sentences for 一定 (yī​dìng — particular)

1. 这个过程需要一定的能量。

   zhè​ge guò​chéng xū​yào yī​dìng de néng​liàng.

   This process requires a certain amount of energy.

   Source: CCMatrix

2. 与孩子沟通是需要一定的技巧的。

   yǔ hái​zi gōu​tōng shì xū​yào yī​dìng de jì​qiǎo de.

   Communicating with children requires certain skills.

   Source: CCMatrix

3. 在一定条件下，它们会伤害您的眼睛。

   zài yī​dìng tiáo​jiàn xià, tā​men huì shāng​hài nín de yǎn​jing.

   Under certain conditions, they can damage your eyes.

   Source: CCMatrix

4. 在这些评估中，人们在跑步机上跑步，直到他们的心率达到一定水平。

   zài zhè​xiē píng​gū zhōng, rén​men zài pǎo​bù​jī shang pǎo​bù, zhí​dào tā​men de xīn​lǜ dá dào yī​dìng shuǐ​píng.

   In these evaluations, people run on a treadmill until their heart rate reaches a certain level.

   Source: CCMatrix