2 sentences for 質量 (zhì​liàng — mass)

1. 质量与重量类似，但是重量受到重力的影响。

   zhì​liàng yǔ zhòng​liàng lèi​sì, dàn​shì zhòng​liàng shòu dào zhòng​lì de yǐng​xiǎng.

   Mass is similar to weight, but weight is affected by gravity.

   Source: CCMatrix

2. 最后，黑洞将会失去它的全部质量并且消失。

   zuì​hòu, hēi​dòng jiāng​huì shī​qù tā de quán​bù zhì​liàng bìng​qiě xiāo​shī.

   Eventually, the black hole will lose all its mass, and disappear.

   Source: CCMatrix