Although the world is full of suffering, it is full also of the overcoming of it.
—Hellen Keller
虽然世界多苦难，但是苦难总是能战胜的。
——海伦·凯勒
assure[???u?]v.使相信；使确信；向……保证
We assure you that such things will not happen again in our future deliveries.
我们向您保证，类似的情况绝不会在今后交货时再次发生。
surgery[?s?:d??ri]n.外科手术；外科学
Organ transplant not only needs accurate surgery but also has a stable source of organs.