look worried
看上去很担心的样子
at the station
在火车站
used to do
过去常做
be used to doing
习惯于做
take a bus to school
乘汽车去学校(take)
go to school by bus
乘汽车去学校（go）
make a fire
生一堆火
have a look
看一看
the balance of nature
生态平衡
lesson note
课堂笔记
two modern cities
两座现代化的城市
ask for leave
请假
2003/12/11
第十一课