她是在波士顿家中打电话。She's on the line from her home in Boston.今晨早些时候，两辆高速火车在波士顿相撞。Two rapid transit trains collided early this morning in Boston.1770年3月在那里发生了后来闻名的波士顿惨案。In March 1770, there occurred what became known as the...
Sedge is similar in appearance to grass but has a solid rather than a hollow stem.莎草看上去和普通的草没什么两样，但其草茎是实芯的而不是空芯的。Meyer Sedge fiber is a new type of green fiber.乌拉草纤维是一种新型的绿色环保纤维.Sedge grows in marshes or near water.芦苇生长在...
East Prussian was an exclave of Germany.东普鲁士原先是德国的飞地.These opacities are prooved to be iron - containing substances by Prussian blue stain.普鲁士蓝染色证实为含铁之色素.A Prussian blue iron stain demonstrates the blue granules of hemos...