Đặt câu với từ "waste of effort"
1. 16 Trying to hit a humbug was a waste of effort.
2. They're things we have to be prepared for of course, but they don't mean that randomization is a waste of effort.
1. 16 Trying to hit a humbug was a waste of effort.
2. They're things we have to be prepared for of course, but they don't mean that randomization is a waste of effort.