在美国的街道上可见到 ADOPT A STREET 的牌子,而在高速公路上每隔若干英里也能见到ADOPT A HIGHWAY LITTER CONTROL PRO-GRAM 的标志。adopt a baby/a child 是“领养婴儿/孩子”。adopt a street 和 adopt a highway lit-ter control program 则表示由某一单位承担某一条街或高速公路的清扫工作。在公路上乱扔废物会被罚款,罚金高达500美元。绝大多数人自觉将废物装在塑料袋中,到公路旁的 rest area(休息区)内或带回家处理掉,但总有个别人不自觉,将饮料瓶罐、毛巾等扔出 ADOPT A STREET is on the streets of the United States, and the ADOPT A HIGHWAY LITTER CONTROL PRO-GRAM logo is visible every few miles on the highway. Adopt a baby/a child is “adoptive baby/child”. Adopt adopt a highway and adopt a highway lit-ter control program to indicate that a certain unit is responsible for cleaning a certain street or highway. Throw litter on the highway and get fined up to $500. Most people consciously pack waste in plastic bags and take them to the rest area near the highway or take them home. However, there are always individuals who unconsciously throw beverage cans, towels, etc.