And so, this one here, I am going to say let's bury the needle on this one.

这个分子，我们把测量表的针标在这儿。

麻省理工公开课 - 固态化学导论课程节选

It involves putting a needle, a fairly large needle into usually one of the pelvic bones and collecting marrow from which is tissue that's deep inside those bones.

先要用针头,相当大的针头刺进你的盆骨,然后进行收集,这些在骨头深处的骨髓

耶鲁公开课 - 生物医学工程探索课程节选