网络例句
笔铅
- 与 笔铅 相关的网络例句 [注：此内容来源于网络，仅供参考]
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People think that pencil lead is toxic.
答：人认为，铅笔铅是有毒的。
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Carbon is a very special material, and there are atoms of it in many things: for instance the 'lead' of a pencil is made of carbon, coal is made of carbon, and so are diamonds.
碳是一种很特殊的物质。许多东西中都有碳。例如，铅笔中的"笔铅"是碳组成的，煤是碳组成的，钻石也是由碳组成的。
- 推荐网络例句
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Do you know, i need you to come back
你知道吗，我需要你回来
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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.
1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。
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Chapter Three: Type classification of DE structure in Sino-Tibetan languages.
第三章汉藏语&的&字结构的类型划分。