We haven't heard from him for weeks but we're still hoping for a letter.
我们已经有几个星期没有他的消息,但仍然盼望着他的来信。
They don't know when the wedding will be.
他们不知道婚礼将是什么时候。
For example, you might pick up a travel book and read a few pages before going to sleep. It is enough to dip into it and read bits here and there. In a word, this is tasting.