1 sentence

1. 这些污染物不会立即对健康产生影响，但长期接触可能是有害的。

   zhè​xiē wū​rǎn​wù bù​huì lì​jí duì jiàn​kāng chǎn​shēng yǐng​xiǎng, dàn cháng​qī jiē​chù kě​néng shì yǒu hài de.

   These pollutants do not have an immediate effect on health, but long term exposure can be harmful.

   Source: CCMatrix