https://online2.tingclass.net/lesson/shi0529/0009/9907/780.mp3
https://image.tingclass.net/statics/js/2012
讲解文本：
puny 微不足道的，弱小的
Mike was so puny that nobody thought he would be a football player.
麦克太弱小了，没有人认为他能成为足球运动员。
Our sales increased last month, but only by a puny 1%.
上个月我们的销量有所增长，不过只增长了微不足道的1%。
