medium vowel的用法和样例：
例句
- The schwa is the most frequent vowel sound in English speech.
在英语中，中元音是最常用的元音。
medium vowel的相关资料：
临近单词
medium bog
medium
medium - voltage distribution
medium-grained grinding stone
Medium-Carbon Structure Steel
medium scale integrated circuit
medium- and long-end Shibor
medium-burned refractory ware
Medium Power Reactor Experiment
Medium Theorem within Calculous
medium processing channel black
medium and small-sized cities
