How do you pronounce 溯?

Q: How do you pronounce 溯? A: sou3, e.g.

溯 (sou3) — meaning, pronunciation, examples

溯 (sou3, sù) — to go upstream; to trace the source; to go against the current; formerly

溯源 (sou3 jyun4) — to investigate the origin of sth; to trace a river upstream back to its source
塑膠袋 (sou3 gaau1 doi2) — Plastic bags
掃地出門 (sou3 dei6 ceot1 mun4) — verb; literally: swept out the rubbish from the house. Metaphor :Bad things com…
掃平 (sou3 ping4) — to clear; to sweep over; to crush; to suppress
掃 (sou3) — (verb) 1. clear away; 2. to scan; to sweep; to clear away; to raid; to disrupt;…
掃毒 (sou3 duk6) — drug squad; virus scan