原始物质 meaning in English

hyle
initial substance
original substance
primitive material
sourcematerial

It was all such stuff as stars are made of, and you couldn't help feeling that .
他所讲的可比作日月星辰的原始物质。
This process may affect both the shape and evolution of the galaxy by depleting the raw material for the formation of new stars and preventing more gas from accumulating there
这样的过程对星系的外形与演化都会有影响，原因是它会让产生新生恒星的原始物质耗尽，也会阻碍更多气体在这里的积累。