2 sentences

1. 他做起事来一丝不苟。

   tā zuò qǐ shì lái yī​sī​bù​gǒu.

   He is meticulous in everything he does.

   Source: Dong Chinese Dictionary

2. 他做事向来一丝不苟，从不出错。

   tā zuò​shì xiàng​lái yī​sī​bù​gǒu, cóng bù chū​cuò.

   He is always meticulous in his work and never makes mistakes.

   Source: Dong Chinese Dictionary