這個問題不是隨便考慮一下就行了。
The subject deserves more than passing consideration.
吃頓便飯就行了，不用多破費。
A light meal will do; you needn’t go to big expense.
這本書大概瀏覽一下就行了。
It’s enough to have a browse of the book.
打個電話就行了，何須寫信。
You don’t need to write a letter. Just give us a call.