初步: initial, preliminary, tentative...
适应: to adapt, to fit, to suit...
地下水: groundwater...
一成不变: nothing much changes (idiom); always the same, stuck in a rut...
小卒: foot soldier, minor figure, a nobody, (chess) pawn...
时而: occasionally, from time to time...
游客: traveler, tourist, (online gaming) guest player...
筷子: chopsticks...
推论: to infer, inference, corollary, reasoned conclusion...
吸毒: to take drugs...
