https://online2.tingclass.net/lesson/shi0529/0009/9907/779.mp3
https://image.tingclass.net/statics/js/2012
講解文本：
redundant 多余的，過剩的，被解雇的
Changes in technology may mean that many skills are now redundant.
科技的變化可能意味著很多技術(shù)現(xiàn)在變得多余了。
Mike was made redundant last month.
麥克上個月被裁了。
