2 sentences

1. 物体的速度越快，其动能就越大。

   wù​tǐ de sù​dù yuè kuài, qí dòng​néng jiù yuè dà.

   The faster an object moves, the greater its kinetic energy.

   Source: Dong Chinese Dictionary

2. 在物理学中，系统的总能通常包括动能和势能。

   zài wù​lǐ​xué zhōng, xì​tǒng de zǒng néng tōng​cháng bāo​kuò dòng​néng hé shì​néng.

   In physics, the total energy of a system typically includes kinetic energy and potential energy.

   Source: Dong Chinese Dictionary