此星云呈泡沫状，之所以如此，是因为附近一颗恒星发生剧烈爆炸，产生的辐射和恒星风从尘埃云中间穿过，掏空了中间部位。
This nebula is a bubble, and it's a bubble because intense blasts of stellar wind and radiation for a nearby star have cut through the dust and hollowed out the middle.
到目前为止的研究发现，绝大多数显示出神经发育的区域对于学习和记忆，尤其是对海马状突起部位最为重要，她补充道。
Most of the areas that show neurogenesis and that have been investigated so far are important for learning and memory, particularly the hippocampus, she added.
在不引人注意的部位，肉芽肿的损害导致局部肿大，并往往侵害邻近的管状或腔状结构。
The granulomatous lesions, regardless of location, result in enlargement of the part and often encroachment on adjacent tubular of cavernous structures.
应用推荐