他通过了HSC考试，现在可以申请大学了。

He passed his ___HSC and can now apply for university.

科学家正在研究如何利用造血干细胞治疗白血病。

Scientists are studying how to use ___HSCs to treat leukemia.

体育摄影师使用高速摄像机捕捉运动员的精彩瞬间。

The sports photographer used an ___HSC to capture the athlete's spectacular moments.

这艘高速客轮可以在两小时内到达邻近的岛屿。

The ___HSC can reach the neighboring islands within two hours.