With a low-pitched rumbling noise, the propeller began to rotate.
伴随着隆隆的低沉噪声，螺旋桨开始旋转起来。
《柯林斯高阶英汉双解学习词典》
He burst into a high-pitched laugh, as though he'd said something funny.
他突然放声大笑，好像讲了什么好笑的事似的。
《柯林斯高阶英汉双解学习词典》
The agency says international relief agencies also have pitched in.
该机构说国际救援机构也提供了支援。
《柯林斯高阶英汉双解学习词典》
Animals are able to hear high-pitched sounds that are inaudible to humans.
动物可以听到人类所听不到的高频声音。
《柯林斯高阶英汉双解学习词典》
首先，指出了设计适宜的坡屋顶倾斜角度，可以节省规划用地的方法；
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The famous pitcher pitched a memorable game before he announced his retirement.
这位知名的投手在宣布退休前投完了一场令人难忘的球赛.
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他表示；低沉的声调是一种权威特性，当你希望人们与你谈话，而你们正努力地创新时，较高的声调可能会更好，因为这会让人觉得你比较平易近人。
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就在上周于马尼拉举办的世界经济论坛（World Economic Forum）上，阿基诺三世将菲律宾称为一个政治经济改革的样板。
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A small loudspeaker designed to reproduce high-pitched sounds in a high-fidelity audio system.
别对我这套新(高保真度)音响设备垂涎,自己买一套吧.
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