2 sentences

1. 这架飞机的最高飞行速度可以达到二马赫。

   zhè jià fēi​jī de zuì​gāo fēi​xíng sù​dù kě​yǐ dá​dào èr Mǎ​hè.

   The aircraft's maximum speed can reach Mach 2.

   Source: Dong Chinese Dictionary

2. 马赫的物理学思想对爱因斯坦产生了深远影响。

   Mǎ​hè de wù​lǐ​xué sī​xiǎng duì ài​yīn​sī​tǎn chǎn​shēng le shēn​yuǎn yǐng​xiǎng.

   Mach's physical ideas had a profound influence on Einstein.

   Source: Dong Chinese Dictionary