1)翻译:
雅思考试可以让考生知道他们的英语水平如何。
IELTS enables examinees to get a sense of how proficient their English is.
IELTS enables examinees/candidates to measure their English proficiency.
2)场景:
实现计算机化可以使我们的生产成本减半。
Computerization should enable us to cut production costs by half.