- The Native American interpreter Sacajawea was a valuable member of the Lewis and dark expedition in 1805.
- An oversight 遗漏 (miss, overslaugh) in proofreading often results in printed errors.
- In the northeastern United States, it rains intermittently 间歇地 throughout the spring.
- Insect pests are among the leading causes of crop failure.
- Urban renewal programs strive to upgrade areas that are becoming slums.
- Alligators still exist in some of the dank 潮湿 swamps and bayous小海湾 of Alabama's coastal regions.
- Communication is one of the most important bonds that hold cultural systems together.
- In calculating the daily calorie requirements for an individual, variations in body size, physical activity, and age should be taken into account.
- The controls of most modern airplanes can be operated either manually or automatically.
- While Billie Holiday did not invent the music called "the blues", she most assuredly helped popularize it.
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