Using the case method to teach in the OAL environment may not be as effective as in the F2F environment, because many complex tasks can be involved.是什么意思_Using the case method to teach in the OAL environment may not be as effective as in the F2F environment, because many complex tasks can be involved.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句