Progress towards this goal was initially good, with a 14.4% gain in efficiency until last year.

这一进程本来相当顺利，到去年止，已经改进了14.4%。

youdao

Progress towards this goal was initially good, with a 14.4% gain in efficiency until last year.

这一进程本来相当顺利，到去年止，已经改进了14.4%。

youdao