1. This scientist has put forth a new theory in his research field. 这位科学家在他的研究领域提出了一种新理论。
2. Over the years several other theories have been put forth, but none has been accepted by the scientific community. 多年来，又有人提出了一些其他的理论，但没有一个被科学界接受。
3. Facing an $8.3 billion budget deficit this year, closing post offices is one of several proposals the Postal Service has put forth recently to cut costs. 面对今年83亿美元的预算赤字，关闭邮局这一做法是邮政总局为精简开支所提出的若干建议中的一条。
4. Various proposals were put forth to arrange the elements into groups based on similarities in chemical and physical properties. 人们提出了各种建议，根据化学和物理性质的相似性把这些元素分组。
5. Another study, published in the Review of Economics and Statistics, reports that the effort put forth by parents is extremely important. 另一项发表在《经济学与统计学评论》上的研究报告称，父母所付出的努力是十分重要的。
