1. I wish I were your second derivative so I could fill your concavities. 我希望我是你的另一个衍生物，那么我就可以填充你的凹陷了。
2. The formation of these microcracks is closely related to local conditions of the Tusion line concavities. 熔合线凹入处的局部条件直接影响微裂纹的形成。
3. Conclusion: Root trunk concavities may cause furcation involvement and reduce the efficacy of periodontal therapy. 结论：根柱凹陷可能是造成根分叉病变的原因，并可能是导致牙周治疗效果欠佳的原因。
4. The results of the experiments show that, compared to GVF, IGVF can achieve better results with less number of iterations for images with long and thin boundary concavities. 实验结果表明，相比与GVF方法，IGVF方法对边界复杂且具有又深又细凹口的医学图像分割效果良好，且迭代次数少。
5. As a result, chimp and bonobo wrists have special features that gorillas lack - little ridges and concavities that serve as' bony stops' to keep their wrists from over-bending. 结果，黑猩猩及侏儒黑猩猩腕部有了大猩猩缺乏的特征- - -充当'骨挡板'的肌肉隆起和凹陷，保护其手腕不会过度弯曲。
