英文關鍵字
water
clear
fantastically
clean
azure
turquoise
verzaska
switzerland
mountain
river
nature
untouched
wilderness
cerulean
blue
transparent
rock
smooth
seaweed
green
pure
waters
flowing
fast
view
stone
sharpens
create
incredible
patterns
tool
rough
whetstone
cut
grindstone
preparation
beach
snakestone
environmentally
friendly
ecologically
safe
against
background
rocky
forest
shore