Think over: 仔细考虑
I'll think over your suggestion again. 我将再次仔细考虑你的建议.
Expertise: expert knowledge or skill in a particular subject, activity or job 专门知识;专门技能;专长
professional/scientific/technical expertise 专业/科学/技术知识
They have considerable expertise in dealing with oil spills. 他们在解决溢油问题方面非常在行.
We have the expertise to help you run your business. 我们有帮助你经营自己业务的专门知识.