nicholas gard, an ecologist at science and engineering consulting firm exponent in bellvue, washington, said that an entire smorgasbord of factors must be taken into account when considering toxicity.
来自华盛顿州exponent科学与工程咨询公司的生态学家尼古拉斯·加尔(nicholasgard)表示,当科学家制定毒性检测标準时,必须把诸多因素列入考虑范围中。