Isn't it just the free sample model found everywhere from perfume counters to street corners?

从香水柜台到街边小摊，这种免费模式的例子可不就是无处不在的吗？

youdao

Isn't it just the free sample model found everywhere from perfume counters to street corners?

从香水柜台到街边小摊，这种免费模式的例子可不就是无处不在的吗？

youdao