4 sentences

1. 这台机器的稳定性很好。

   zhè tái jī​qì de wěn​dìng​xìng hěn hǎo.

   The stability of this machine is very good.

   Source: Dong Chinese Dictionary

2. 这套训练动作重点在于加强躯干的稳定性。

   zhè tào xùn​liàn dòng​zuò zhòng​diǎn zài​yú jiā​qiáng qū​gàn de wěn​dìng​xìng.

   The focus of these exercises is on strengthening core stability.

   Source: Dong Chinese Dictionary

3. 这种新型光纤大大提高了数据传输的稳定性。

   zhè zhǒng xīn​xíng guāng​xiān dà​dà tí​gāo le shù​jù chuán​shū de wěn​dìng​xìng.

   This new type of optical fiber has greatly improved the stability of data transmission.

   Source: Dong Chinese Dictionary

4. 飞镖比赛非常考验投手的心理素质和手臂的稳定性。

   fēi​biāo bǐ​sài fēi​cháng kǎo​yàn tóu​shǒu de xīn​lǐ sù​zhì hé shǒu​bì de wěn​dìng​xìng.

   Darts competitions test the thrower's psychological state and arm stability.

   Source: Dong Chinese Dictionary