求英语高手帮忙分析下面的句子,谢谢
blacksubstancemadefromcoaltar,turpentineorpetroleumwhichisstickyandsemi-liquidwhenhot...
black substance made from coal tar, turpentine or petroleum which is sticky and
semi-liquid when hot, and hard when cold, and is used to fill in cracks or
spaces, eg between the planks of a floor or of a ship's deck, to make roofs
waterproof, etc 。
句中的 when hot 和 when cold 这样的用法感觉好奇怪。另外,望高手帮忙划分出句子成分。
谢谢!!!! 展开
semi-liquid when hot, and hard when cold, and is used to fill in cracks or
spaces, eg between the planks of a floor or of a ship's deck, to make roofs
waterproof, etc 。
句中的 when hot 和 when cold 这样的用法感觉好奇怪。另外,望高手帮忙划分出句子成分。
谢谢!!!! 展开
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