"the down staircase" "the downward course of the stream"
"he lay face downward" "the downward pull of gravity"
"don't fall down" "rode the lift up and skied down" "prices plunged downward"
downward是什么意思
downwards是什么意思
downwash是什么意思
downwelling是什么意思
downwind是什么意思
downy是什么意思
dowry是什么意思
dowsabel是什么意思
dowse是什么意思
dowser是什么意思