come along跟随，到达，进步，赶快
a letter of invitation邀请信
invite sb. to do sth.邀请某人去做某事
three times a week一周三次
free/spare time空闲时间
track and field田径
at least至少
at most至多
at first首先，第一
of course not当然不
be up to sb.取决于某人
set a good example树立一个好榜样
relate… to… 涉及，有关
an honor一份荣誉
world championships世界锦标赛
lose weight减重，减肥
gain weight增肥
at home and abroad在国内外
fall apart破裂，散掉
because of… 因为，由于
due to… 因为，由于
work out锻炼，计算出，解决
with the help of… = with one’s help在……的帮助下
by the way顺便问一下
on the way在路上
in the way挡道，阻碍
it seems to do sth.好像做某事
the secret to doing sth.做某事的秘密
……
