Part of that effort will involve tutoring shop staff selling the handsets in how to show off the phones to best effect.

这需要训练手机店员如何去展示手机的最好性能。

youdao

Part of that effort will involve tutoring shop staff selling the handsets in how to show off the phones to best effect.

这需要训练手机店员如何去展示手机的最好性能。

youdao