短语词组短语oral sensory stage 口腔感觉期oral sadistic stage 口欲期oral stage of deglutition 吞咽口期oral -teaching in the medium stage 中级阶段口语教学early oral stage 早期口爱期The oral stage 口腔期oral stage of swallowing 吞咽口期Stage oral 口欲期 返回 oral stage