小题1:worked on
小题2:In terms of
小题3:Little by little
小题4:at the bottom of
小题5:make sure
小题6:On average
小题7:take off
小题8:ended up
小题9:caught fire
小题10:of all time
小题1:worked on
小题2:In terms of
小题3:Little by little
小题4:at the bottom of
小题5:make sure
小题6:On average
小题7:take off
小题8:ended up
小题9:caught fire
小题10:of all time