根据卡耐基的克里斯·菲尔德和乔。贝里当前所作的工作表明，这些影响是重要的。
Previous work by Carnegie's Chris Field and Joe Berry had indicated that the effects were important.
贝克斯菲尔德高中教师克里斯蒂娜·费罗认为，获得这些材料、培训老师和学生正确地使用都会十分的昂贵。
Kristina Fierro, a high school teacher in Bakersfield, said it would be expensive to get the materials, train the teachers and train the students to use the materials properly.
请看这张照片，伊利诺伊大学的生物学家克里斯·泰勒和艾米丽·哈特菲尔德正在布塔哈其河（Buttahatchee River）中拉网。
Here, University of Illinois biologists Chris Taylor and Emily Hartfield seine the Buttahatchee River, Marion County, Alabama.
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