Objective To find out whether laparoscopic assisted was better than open abdomino-perinea l resection for low rectal adenocarcinoma.
目的评估低位直肠癌的腹腔助手术是否优于传统的腹会阴联合切除术。
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Elasmobranchs detect these via organs called the ampullae of Lorenzini, which are jelly-filled receptors scattered around their noses and mouths that serve to sense the electrical fields generated by potential prey's muscles.
Elasmobranchs 通过称为 Lorenzini 壶的检测到这些,这些是散布在鼻子和嘴巴周围的充满果冻的受体,用于感知潜在猎物肌肉产生的电场。
That’s because snakes are essentially stick-look-alikes whose hundreds of rib muscles and huge ventral scales help them move in a way that no other predator does, which kept them incognito and helped them chow down on unsuspecting prey.
那是因为蛇本质上是长得像棍子的动物,其数百条肋骨肌肉和巨大的鳞帮助它们以其他捕食者所没有的方式移动,这使它们隐身并帮助它们吞噬毫无戒心的猎物。
" Alaska populations of olive-sided flycatchers are just on this razor-thin margin of what's biologically possible, " said Julie Hagelin, a wildlife research biologist at the Alaska Department of Fish and Game and a senior research scientist at the University of Alaska Fairbanks.
阿拉斯加鱼与猎物部野生动物研究生物学家、阿拉斯加大学费尔班克斯分校高级研究科学家朱莉·哈格林 (Julie Hagelin) 表示:“阿拉斯加橄榄鹟的种群数量在生物学上的可能性微乎其微。”