Now and then they heard the roar of a heavy truck.他们不时地听到大卡车的轰鸣声。Now and then I referred a client to him.我不时地介绍客户给他。Stir the batter every now and then to keep it from separating.不时搅动面糊，防止其成分散开。...

now and then的音标：now and then的英式发音音标为：[nau ænd ðen]now and then的美式发音音标为：[naʊ ənd ðɛn]...

有时，时而，不时，间或...