Whether be heated or not, this substance will not dissolve in water.
不管是否加热，这种物质都不会溶解于水。
We now understand that it's this substance that keeps people smoking, despite all the warnings.
正是尼古丁让人不顾警告，吸烟成瘾。
It also occurred to me that if this was the case I might be able to extract this substance from the mineral by the ordinary methods of chemical analysis.
我突然想到，若真如此，我也许可以用普通的化学分析方法从矿物中将这种物质提取出来。
If this substance can not conduct electricity, neither will it conduct heat.
如果这种物质不传电，它也就不传热。
The formation process of this substance provides a new way to remove the oil in food waste.
该物质的形成对餐厨垃圾中油脂的去除提供了新的思路和途径。
Scientists are still not very clear about the chemical and physical characteristics of this substance.
科学家们仍然不很清楚这种物质的化学特性和物理特性。
Beeswax: a natural wax made by bees in the cell walls of honeycombs, this substance is a natural emulsifier used in cosmetics.
蜂蜡：是蜜蜂在蜂巢的细胞壁上分泌产生的天然蜡，一种天然乳化剂，常使用在化妆品中。
This substance is called propolis.
这种物质被称为蜂胶。
This substance is extracted from seaweed.
这种物质是从海藻中提取的。
This substance reacts one-tenths as fast as the other one.
这种物质的反应速度是另一物质的十分之一。
This substance has now been cloned by molecular biologists.
这种物质现已被分子生物学家克隆。
This substance reacts three times as fast as the other one.
这种物质反应的速度是另一种物质的三倍。
This substance is secreted from cell in the intestinal walls.
这种物质是从肠壁的细胞中分泌出来的。
This substance increases pain tolerance, counters stress and imparts a feeling of well-being.
这种物质增加对疼痛的耐受性，对抗紧张，并给人以健康的感觉。
This substance increases pain tolerance, counters stress and imparts a feeling of well-being.
这种物质增加对疼痛的耐受性，对抗紧张，并给人以健康的感觉。
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