Functional and assurance requirements.(功能性需求和保证需求。)
There is nothing to guarantee that everybody is willing to make the effort; there is no assurance that the learner will have any adequate return for his toil.(没有什么可以保证每个人都愿意付出努力；学生的辛苦学习是否能得到适当的回报，这是没有把握的。)
Level 4: Testing and Quality assurance.(四级：测试和品质保证。)
Apply quality assurance to traceability as well.(对追溯性应用质量保证。)
Has it been passed to quality assurance (QA) for testing?(已经通过了质量保证(QA)检测了吗？)
Masur led the orchestra with assurance.(马苏尔很有信心地带领了那个管弦乐队。)
This recommendation should be rejected as dangerous, however, since there is no assurance that the watch commanders' standards will continue to be observed once approval is no longer required.(但是，这项建议应以危险为由予以拒绝，因为无法保证一旦不再需要批准，监测指挥官的标准将继续得到遵守。)
But take a longer view and there is a surprising amount that we can say with considerable assurance.(但从更长远的角度来看，我们可以相当肯定地说，数量多得惊人。)
It's a very important put of assurance of responsibility.(担起责任是非常重要的。)
A review of this book in The Times lamented that Mr. Davis had given us no especial assurance that any of the traditional accidents can save us once more.(《泰晤士报》的一篇书评惋惜道：“戴维斯先生并没有向我们保证，任何传统的事故都能再次拯救我们。”)
