to learn something through experience, especially through making mistakes
通过经验学习某事，特别是通过犯错误来学习
"He learned the hard way that honesty is the best policy."
"他通过艰难的方式学到了诚实是最好的政策。"
casual or polite conversation about unimportant topics
in the international arena or community
to become familiar or friendly with someone
My personal opinion or suggestion
The process of improving the visibility of a website or web...
raining very heavily
