向导把该地历史的老一套讲得滚瓜烂熟，但当你一问起别的东西时，他就瞠目结舌，无言以对了。 The guide was ready enough with his usual pattern on the history of the place, but as soon as you began to question him on anything outside that, he was all at sea.
草药的奇效简直使一些思想保守的人瞠目结舌。 The miraculous effect of medical herbs has raised some conservative eyebrows.
