1. Know the ropes, learn the ropes
- to learn/know how to do a job or activity
2. Two heads are better than one
- used to say that two people working together will achieve more than one person working alone.
3. Know something backwards and forwards
- know something very well. Be an expert, or be well acquainted with something.
Bạn lưu ý là thành ngữ trong tiếng Anh (idioms) khó có thể văn vẽ như tiếng Việt của chúng mình nhé.