relative abundance

常見例句

Helium’s rarity on Earth and relative abundance in America are cosmic and planetary accidents.
氦在地球上存量稀少，而在美國相對(duì)豐富，這與宇宙和行星的形成過程是有關(guān)的。
But the relative abundance of quasars in the first billion years of the universe has puzzled astrophysicists.
但是，類星躰在宇宙誕生的前十億年中的相對(duì)來說很豐富一直使天文物理學(xué)家迷惑不已。
In doing so, the report also detailed the strengths upon which the country can build: a relative abundance of land and natural resources.
爲(wèi)推動(dòng)柬埔寨增長(zhǎng)，該報(bào)告還詳細(xì)介紹了該國可以依托的優(yōu)勢(shì)：相對(duì)豐富的土地和自然資源。