1. Although biologists can easily induce extra limbs to grow on the flank of a tetrapod this cannot be done in the neck. 虽然生物学家能轻易让四足动物在侧腹长出额外的肢，在颈部却做不到。
2. Although biologists can easily induce extra limbs to grow on the flank of a tetrapod, this cannot be done in the neck. 虽然生物学家能轻易让四足动物在侧腹长出额外的肢，在颈部却做不到。
3. New process flow of the tetrapod-like zinc oxide whisker (T-ZnOw) is investigated and expert device is designed in this paper. 提出了新的四针状氧化锌晶须的生产工艺及流程，设计了专门的研究装置。
4. And the fusing of bones making up the lower jaw fortified this region, facilitating the presumed" buccal pump" mode of tetrapod ventilation. 下颔部位骨头的愈合也加强支撑力，帮助可能以口部当做帮浦的形式换气。
5. JENNIFER A. CLACK, a Reader in vertebrate paleontology and doctor of science at the University of Cambridge, has been studying tetrapod origins for 25 years. 克拉克是英国剑桥大学的科学博士与脊椎动物古生物学的高级讲师，研究四足动物起源已超过25年。
