They pause and chew their pencils.他们停了下来，咬着铅笔。We shall have to manage with these old pencils.我们只得凑合着用这些旧铅笔.I like to use pencils with erasers on top.我喜欢用带橡皮的铅笔....
...sharpened pencils.削尖的铅笔Stop clacking your pencils!别弄得铅笔噼啪乱响!We need such expendable supplies as pencils, ink and paper.我们需要象铅笔 、 墨水和纸张这样的消费品.They pause and chew their pencils.他们停了下来，咬着铅笔。They pause and chew their penc...