a significant length of time 一段时间
A considerable length of time 相当长的时间
Length of time a lesson 一节课多长时间
The test report will be retained for a length of time as required in "Quality Record Control Procedure".
试验报告按《质量记录控制程序》规定保存期保存。
How incredible to have a repertory cast of actors ready to commit, like family, to such a project over such a length of time.
像这样如同一家人一般的演员阵容每周固定出演,还能持续这么久,确实令人难以置信。
He continued for a length of time that frightened and astonished me - about five minutes, it seemed - ending up by breaking the riding-crop.
他打了好长时间,令我恐惧、震惊。大约有五分钟,最后,不是鞭子被打坏了也不会停下来。
How quickly this can happen depends on the length of time a person is breathing the gas and the amount of the gas he or she breathes in.
VOA: special.2010.02.02
It's - a suture or a stitch has to hold the wound closed so it has to have certain mechanical strength and imagine the problem of making something that's dissolvable so it disappears but also is strong enough to hold a wound closed reliably for a length of time.
能够拉紧切口的缝合线,就必须具有一定的机械张力,大家想像一下制造这种缝合线的难度,身体组织不仅要能吸收这种缝合线,而且这种线必须有足够的张力,一定时间内能够拉紧切口
How long" can be used in a question and it refers to a length of time or a length of distance.
How long” 句型用于问句中,用来询问时间或距离的长短。
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