external acoustic meatus是什么意思

用法例句

On the basis of a survey conducted among the freshmen on the application of metacognitive strategies in the outside-classroom listening,suggestions are proposed to cultivate the ability of autonomous learning.

从元认知策略理论入手,通过对大学新生英语课外听力自主性学习中元认知策略运用情况的调查,提出课外听力元认知策略指导的建议。