breakthrough可數嗎

breakthrough是可數名詞，breakthroughs中文意思是，突破

But such transits have paved the way for what might prove to be one of the most vital breakthroughs in the cosmos—detecting Earth-sized planets orbiting other stars.但是這樣的凌日現象已經為被證明可能是宇宙中最重要的突破之一的説法鋪平了道路，這個説法即找到那些圍繞其他恆星軌道公轉的和地球大小相似的行星。