2 sentences

1. 这种设计在安全方面还存在一些欠缺。

   zhè zhǒng shè​jì zài ān​quán fāng​miàn hái cún​zài yī​xiē qiàn​quē.

   This design still has some deficiencies in terms of safety.

   Source: Dong Chinese Dictionary

2. 由于经验欠缺，他没能处理好那个突发状况。

   yóu​yú jīng​yàn qiàn​quē, tā méi néng chǔ​lǐ hǎo nà​gè tū​fā zhuàng​kuàng.

   Due to a lack of experience, he failed to handle that emergency well.

   Source: Dong Chinese Dictionary