下沉

to sink down

down / downwards / below / lower / later / next (week etc) / second (of two parts) / to decline / to go down / to arrive at (a decision, conclusion etc) / measure word to show the frequency of an action

to submerge / to immerse / to sink / to keep down / to lower / to drop / deep / profound / heavy

the Chinese market, excluding first- and second-tier cities