youdao

SAT scores began dropping in 1963; today, on average, 30% of students do not complete high school in four years, a figure that rises to 50% in poor urban neighborhoods.

SAT 分数从1963年开始下降；今天，平均有30%的学生没有在四年内完成高中学业，这一数字在贫穷的城市社区达到了50%。

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Natural soil fertility is dropping in many areas because of continuous industrial fertiliser and pesticide use, while the growth of algae is increasing in lakes because of the fertiliser run-off.

在很多地区，由于工业化肥和农药的持续使用，导致自然土壤的肥力正在下降，然而化肥的流入却导致湖泊中藻类生长得越来越快。

youdao

The team is using forty cars and trucks to chase tornadoes, dropping measuring instruments in their paths.

VOA: special.2009.06.09

What's happening is the housing market is dropping, home prices are falling, people are defaulting in record numbers, and there are foreclosures.

房地产市场在衰退,房价在下跌,违约人数破历史纪录,很多贷款买房者取消了赎回权

耶鲁公开课 - 金融市场课程节选

Things very quickly get ugly and you might even already be feeling this tension in Scratch if you're dragging and dropping and moving things around.

是不是很丑呢,如果东丢一点，西落一点,你很快就会不爽了。

哈佛公开课 - 计算机科学课程节选

Democratic heavyweights have lately been dropping in on Maine, to pound another Republican there.

ECONOMIST: Senate campaigning

They began dropping in June 2007, four months before most other stocks began to fall that year.

NPR: Stocks Tied To The Consumer Are Hot. Maybe Too Hot

The United States has been dropping in economic freedom since peaking at a score of 81.2 in 2007.

FORBES: 1-Year Freedom Investing Returns