直到2002年，它才第一次引起西尔文学习集团的关注。由于多媒体语言学校市场的崩溃，几个WSI教学中心因此关闭。

It was't until 2002, that it first became a concern for Sylvan. Severl WSI centers closed due to the collapse of the multimedia language school market.

youdao

直到2002年，它才第一次引起西尔文学习集团的关注。由于多媒体语言学校市场的崩溃，几个WSI教学中心因此关闭。

It was't until 2002, that it first became a concern for Sylvan. Severl WSI centers closed due to the collapse of the multimedia language school market.

youdao