2 sentences

1. 这种金属的物理性质非常稳定。

   zhè zhǒng jīn​shǔ de wù​lǐ xìng​zhì fēi​cháng wěn​dìng.

   The physical properties of this metal are very stable.

   Source: Dong Chinese Dictionary

2. 热胀冷缩是许多物质的基本物理性质。

   rè zhàng lěng suō shì xǔ​duō wù​zhì de jī​běn wù​lǐ xìng​zhì.

   Thermal expansion and contraction is a basic physical property of many substances.

   Source: Dong Chinese Dictionary