| 单词 | 可发出 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔beeper〕One that beeps.呼叫器：可发出嘟嘟声信号的机器美国传统〔bell〕A hollow metal instrument, usually cup-shaped with a flared opening, that emits a metallic tone when struck.钟：一种中空的金属乐器，通常呈杯状带喇叭式外张口，敲击时可发出金属的音质美国传统〔celesta〕An instrument with a keyboard and metal plates struck by hammers that produce bell-like tones.钢片琴：用锤子敲击可发出铃声似的声音的带键盘和金属片的乐器美国传统〔cymbal〕A percussion instrument consisting of a concave brass plate that makes a loud clashing tone when hit with a drumstick or when used in pairs.钹：一种打击乐器,由一个凹铜片构成，当用单个或者双个鼓槌敲击时，可发出高的撞击声美国传统〔trumpet〕Music An organ stop that produces a tone like that of the brass wind instrument.【音乐】 音栓：可发出类似铜管乐器音调的音栓美国传统Some natural crystals such as quartz are piezoelectric, which means they generate an electrical charge when they are pressed or distorted.一些自然晶体，如石英是可压电的，即当它们被挤压或变形时可发出电流。剑桥国际The alarm emits infra-red rays which are used to detect any intruder.警报器可发出红外线，用于检测是否有人闯入。剑桥国际 |
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