2 sentences

1. 这里的地貌是由于长期的泥沙沉积形成的。

   zhè​lǐ de dì​mào shì yóu​yú cháng​qī de ní​shā chén​jī xíng​chéng de.

   The local landscape was formed by long-term sediment deposition.

   Source: Dong Chinese Dictionary

2. 这种药液放置久了会出现一些沉积，用前需摇匀。

   zhè zhǒng yào​yè fàng​zhì jiǔ le huì chū​xiàn yī​xiē chén​jī, yòng qián xū yáo yún.

   Sediment may form in this liquid medicine after standing for a while; shake well before use.

   Source: Dong Chinese Dictionary