If you haven 't a clue how to help , ms. crowder says , avoid voicing your anxiety or frustration .
克劳德说，如果你还是不知道该如何出手帮助孩子，那起码不要朝他们表达出你内心的焦虑和沮丧。
" Almost all the studies that have been done have looked at the number of species in an ecosystem , " says crowder .
“几乎所做的所有研究都只注重生态系统的绝对物种数量，”克劳德说。
Statistical analysis of seed data - ...... crowder .
对一组种子数据的统计分析。
Although the work of crowder and his group does not address the issue of yields from organic versus conventional farms , their study found that the increased evenness of organic farms compared with that of conventional farms led to 18 % lower pest densities and 35 % larger plants .
This practice of shipping the remains from china to the us is a reversal of a common practice during the 1800s , when the bodies of chinese railroad workers who died in the us were shipped home to ensure burial near their families , crowder said .
