在英语中，询问一个物体的长、宽和高可以通过以下几种方式表达：
直接询问尺寸：
- “Could you please tell me the length, width, and height of the object?”
- “What are the dimensions of this item (length, width, height)?”
分开询问各个尺寸：
- “What is the length of the object?”
- “How wide is this item?”
- “Can you tell me the height of the object?”
使用不同的词汇：
- “What are the measurements of the object?”
- “How big is it in terms of length, width, and height?”
在特定情境下的询问：
- “How long and wide is this box?”
- “What are the size specifications of this product?”
在描述或需要详细尺寸时：
- “Could you provide the precise dimensions of the object for the shipping purposes?”
- “I need the exact length, width, and height for the inventory record.”
使用这些句型时，记得根据实际情况调整语气的正式程度，以便更自然地融入对话。