In the northeastern United States, it rains intermittently 间歇地 throughout the spring.

Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.

One of the greatest breakthroughs for professional women came in 1973 when the field of banking opened up for them.

HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?

The Native American interpreter Sacajawea was a valuable member of the Lewis and dark expedition in 1805.