老师给了山姆一张要读的书的清单，但他刚刚做了眼部手术，需要一些可以存储书并对他出声朗读的应用程序。
Sam was given a list of books to read by his teacher, but he has just had an eye operation and needs some apps that can store the books and read them aloud to him.
第二次练习，学习者是一边出声复述操作动作的指导程序一边练习。
Practice for the second time, learner simultaneously make a noise to reply the leading procedure of say the operation action part practice.
被动分频网络功能，对热防护系统高频部分提供出声透明的压缩驱动程序的保护。
The passive crossover network features a thermal protection system on the HF section providing audibly transparent protection for the compression driver.
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