https://online2.tingclass.net/lesson/shi0529/0009/9907/315.mp3
https://image.tingclass.net/statics/js/2012
讲解文本：
old hand 经验老到的人，老手
He's an old hand at this game.
这个游戏他是老手了。
If you have any problems about this, ask Mary. She's an old hand.
如果你有任何问题，可向Mary请教，她是老手。
疯狂练习吧!
