n.接合；结合；合并

A modern galaxy such as the Milky Way involved the coalescence of a million such building blocks. 像银河系这类现代星系，是由上百万个这样的矮星系接合而成的。

The process has been underway since the earliest coalescence of atoms into molecules, into stars, into angelic hosts, and into human creation. 这个过程自从原子最早的结合成分子，结合成星辰，结合成天使，结合成人类的创造就已经在进行了。

They appear to arise either during births of black holes in the cores of dying massive stars or from the coalescence of binary neutron stars or black holes. 它们似乎起源于濒死恒星的核心形成黑洞的过程，或来自于双星系统里中子星或黑洞的合并。