美语听力 English Cafe 172（在线收听）

Topics: Ask an American: forecasting the future; offhand; off the top of one’s head; out with the old, in with the new; using “more” versus “-er” to form the comparative

Words:
desalination
shortage
nanotechnology
to associate (something) with (something)
water-stressed
to thrive
ideally
leisure
ironic
perceived
roughly
bright
spot
informed
to fit with (something)
offhand
off the top of one’s head
out with the old, in with the new