广播电视英语短句 第 214 课：植物如何使用水-2

Scientists say plants loss ninety five percent of water they take in through this pores. 科学家们说植物会损失它们通过小孔吸收的 95% 的水分。

Some plant's pores can tighten to save water during conditions of high carbon dioxide. 一些植物在高二氧化碳环境下会收缩以保存水分。

Other plants are not able to do this as well. 其他植物也能这么做。

Now, scientists know how these tine pores tighten in plants. 现在，科学家们知道植物中的这些小孔如何收缩。

Julian Schroeder is a professor of biology at the University of California , San Diego. Julian Schroeder 是加尼福尼亚圣地亚哥大学的生物学教授。