2 sentences

1. 如果你不关心你在做什么，你就很难约束自己。

   rú​guǒ nǐ bù guān​xīn nǐ zài zuò​shén​me, nǐ jiù hěn nán yuē​shù zì​jǐ.

   If you don’t care about what you’re doing, it’s very hard to discipline yourself.

   Source: CCMatrix

2. 另外一个常见的、无意识的约束在于，假设这些线必须要经过圆点的中心。

   lìng​wài yī​ge cháng​jiàn de, wú​yì​shí de yuē​shù zài​yú, jiǎ​shè zhè​xiē xiàn bì​xū yào jīng​guò yuán​diǎn de zhōng​xīn.

   Another common, unconscious constraint is the assumption that the lines must pass through the center of the dots.

   Source: CCMatrix