1 sentence

1. 这是一种慢性毒药，中毒者不会立刻出现症状。

   zhè shì yī zhǒng màn​xìng dú​yào, zhòng​dú zhě bù huì lì​kè chū​xiàn zhèng​zhuàng.

   This is a slow-acting poison; the victim will not show symptoms immediately.

   Source: Dong Chinese Dictionary