Teachers should strictly perform the contract and not arbitrarily transfer classes. In the case of emergency need, teachers should require prior approval of school to transfer classes.是什么意思_Teachers should strictly perform the contract and not arbitrarily transfer classes. In the case of emergency need, teachers should require prior approval of school to transfer classes.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句