是美国

• San francisco and new york are important mercantile ports in america .
  旧金山和纽约是美国的重要商港。
• One recent example is the current transition at at ＆ t .
  最近的一个例子是美国电话电报公司近来的转变。
• Both disorders were caused by the american tobacco ringspot virus .
  两种病害是美国烟草环斑病毒引起的。
• San francisco is generally known as the " gate of east " of america .
  旧金山是美国“通向东方的大门”。
• The lincoln highway is one of the main thoroughfares of the united states .
  林肯公路是美国主要大道之一。
• Flirting is a purely american custom, it doesn't exist here .
  调情卖俏纯粹是美国人的习惯，这里完全行不通。
• But there were exceptions, the most important of which was the united states .
  但也不无例外，最突出的是美国。
• Humor was a means by which the american writer would win popular acceptance .
  幽默是美国作家迎合群众的一种手段。
• Samuel was the only justice of the u.s. supreme court to be impeached .
  塞缪尔是美国最高法院唯一被弹劾的大法官。