dust on (或 onto,over,with)

• (把粉末)撒在…上：

  They dusted an insecticide on (或 onto,over) the crops.

  他们给庄稼撒农药。

  She dusted her face with powder.

  她在脸上抹了粉。

  She dusted a cake with sugar.

  她在糕饼上撒糖。