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- One result is that M101, also called the Pinwheel Galaxy, has several extremely bright star-forming regions (called HII regions) spread across its spiral arms. 其结果之一是，M101，也被称为风车星系，其有几个极其明亮的恒星形成区域（称为HII区）分布在它的旋臂。
- Historically of great interest to astronomers, M33's giant HII regions are some of the largest known stellar nurseries - sites of the formation of short-lived but very massive stars. 在历史上，天文学家最感兴趣的是M33巨大的HII区域，那里有一些已知的大量恒星孕育场-是短期的但质量非常大的恒星诞生地。
- Keywords Radio radiation;ISM;HII region;jets and outflows;star formation; 射电辐射;星际介质;电离氢区;喷流和外向流;恒星形成;
- An Analysis of the VLBI Relative Position Map of H 2O Masers in the HII Region Complex IC 133 of the Spiral Galaxy M33 对旋涡星系M33的HII区复合体IC133中H_2O脉泽VLBI斑点图的分析
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- A study of molecular clouds with compact HII regions in Galactic 区成协分子云的研究
- The earthquake may cause a region to fall in. 地震可以使一个地区下陷。
- Radio Continuum Observations at 2.5cm Wavelength for 18 HII Regions 18个电离氢区的2.;5cm射电连续谱观测
- Storms spring up easily in this region. 这个地区很容易发生风暴。
- He is earning a salary in the region of25,000. 他当时的薪金在25,000英镑左右。
- A storm that cut off power to the whole region. 切断了整个地区电力供应的暴风雨
- A planar region bounded by a circle. 圆形区，圆形空间被圆所包围的一个平面区域
- A vineyard or wine-producing region in France. 克鲁法国的葡萄园或葡萄酒生产区
- Food and fuel were scarce in this region. 这地区食物和燃料都很缺乏。
- There used to be a military base in the region. 这地区过去有个军事基地。
- He is an authority in the region of chemistry. 他是化学界的权威。
- I have a pain in the lumbar region. 我腰部疼痛。
- There used to be a lot of troubles in that region. 那个地区过去动乱不已。
- HiI'm Meg(I'm) glad to meet you! What's your name? 你好，我是梅格，见到你很高兴。你叫什麽名字？
- Nobody likes to live in that desert region. 没有人喜欢生活在那个沙漠地区。
