【108正式英師,加油】評論
Based on these findings, the scientists estimated that up to 10,000 black holes dwell within about 3 light years of Sagittarius A, boasting four million times the mass of our sun and located 26,000 light years from Earth.基於這些發現,科學家們預計距射手座A三光年處存在多達一萬個黑洞,比我們的太陽總體多四百萬倍,在距離地球兩萬六千光年times =倍My foot swelled up to three times the normal size when it was stung by a wasp.被黃蜂蜇了以後,我的腳腫成了原來的三倍。the mass of sth = most of sth