- คำศัพท์และสำนวนภาษา
- passage (n.): a narrow opening or way
between two places
- combination (n.): two or more
things put together
- pressure (n.): the
force that a liquid or gas produces when it presses against an area
- limestone (n.): a type
of rock composed of calcium carbonate
- carve (v.): if a river, the wind
etc. carves land or rock, it removes some of it
- dissolve (v.): (of
a solid) to mix with a liquid and become part of it
- drip (v.): (of liquid) to
fall in small drops
- trickle (v.): to run in a thin
stream, drip
- gradually (adv.): slowly, over
a long period of time
- eat away at something (phrv.): to reduce or destroy something
gradually
- eventually (adv.): at the end
of a period of time or a series of events
- additionally (adv.): used when you
want to mention another thing after something else
- erosion (n.): a wearing away
- spring (n.): a place where water
comes naturally out of the ground
- apart from (prep.): in addition to,
as well as
- coastline (n.): the
land along the ocean
- pound (v.): to hit something
repeatedly with force
- commonly (adv.): usually, very
often
- unique (adj.): being
the only one of its kind
- acidic (adj.): containing
acid
