The Vietnamese phrase "quen tay" literally translates to "familiar with the hand," but in practice, it means to be skilled, accustomed, or proficient at something due to practice or repetition. When you are "quen tay" at an activity, it implies that you have done it so many times that it becomes easy and natural for you.
In more advanced contexts, "quen tay" can be used to describe a person who is not just skilled but also very comfortable and quick in performing a task. For example, you might say "Anh ấy làm việc rất nhanh vì đã quen tay," which means "He works very quickly because he is skilled at it."
While "quen tay" primarily refers to skill through practice, it can also imply that someone is comfortable or at ease with a particular task or activity due to familiarity.
In summary, "quen tay" is a useful phrase in Vietnamese that describes someone who has become skilled or proficient through practice.