The digital tracks are binaural, or two-toned, recordings that deliver different tones in each ear, altering brainwaves.
这种音频必须通过双耳收听，两只耳朵由于接收到不同音调的声音，由此改变脑电波。
The crater seems to have exposed two different types of bedrock, the light-toned rock toward the outer edge and the darker rock on the inner edge.
陨坑内部似乎显露出两种不同类型的基岩，即外缘的浅色岩石和内沿的深色岩石。
Sleeveless season is here! Make the most of it by sculpting toned, beautiful arms with our simple workout-you'll see results in just two weeks.
无袖的季节就在这里！尽力发挥，用我们的简单的锻炼塑造你美丽的手臂，你会在短短两个星期内见到成果。
Sleeveless season is here! Make the most of it by sculpting toned, beautiful arms with our simple workout-you'll see results in just two weeks.
无袖的季节就在这里！尽力发挥，用我们的简单的锻炼塑造你美丽的手臂，你会在短短两个星期内见到成果。
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