物理原理很有趣。

Wùlǐ yuánlǐ hěn yǒuqù.

Physics principles are interesting.

医生建议我做物理治疗。

Yīshēng jiànyì wǒ zuò wùlǐ zhìliáo.

The doctor suggested I do physical therapy.

物理实验需要仪器。

Wùlǐ shíyàn xūyào yíqì.

Physics experiments require equipment.