据推测这些气泡是从我们的银河系中心发出的，它们的尺寸极大，可以与整个银河系相比，从头到尾大约蔓延了5000光年。
Assuming the bubbles emanate from our Galaxy's center, the scale of the bubbles is huge, rivaling the entire Galaxy in size, and spanning about 50, 000 light years from top to bottom.
据推测这些气泡是从我们的银河系中心发出的，它们的尺寸极大，可以与整个银河系相比，从头到尾大约蔓延了5000光年。
Assuming the bubbles emanate from our Galaxy's center, the scale of the bubbles is huge, rivaling the entire Galaxy in size, and spanning about 50, 000 light years from top to bottom.
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