It works with headphones and it both tests a person's hearing and then becomes a hearing aid.

而且你还可以插上耳机，测试听力，当作助听器使用。

Tanya, have you had a hearing test?

Tanya，你做过听力检测吗？

These belugas live in a relatively pristine environment, which might explain why they aced the hearing test.

这些白鲸生活在相对原始的环境中，这或许可以解释为什么它们在听力测试中表现优异。

This is the first beluga from Cook Inlet that we have been able to do a hearing test on.

这是来自库克湾的第一头白鲸，我们已能为他做一个听力测试。

Doctors often suggest a hearing test to establish a baseline but I'm sure you haven't had a recent hearing test, I definitely haven't.

医生常常建议我们要做听力检测以达到听力底线，但我相信你从来没有做过这个检测，我也的确没有做过。

(a) Screening procedures: They are employed to test hearing in " high risk" infants and are based on infant's behavioral response to the sound signal.

（a）筛查步骤，通常用来测试 “高危” 婴儿的听力，并根据婴儿对声音信号的行为反应进行测试。