In the northeastern United States, it rains intermittently 间歇地 throughout the spring.
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Whencarbonisaddedtoironintheproperproportions,theresultissteel.
HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?
Thefearofsmallpox,whichterrorizedtheeighteenthcentury,hasnoanalogy(likeness)today.
TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.
TheeconomyofDallas,Texas,isstronganddiversified.