1.
Heat reacts on / upon certain substances to change their chemical composition.
热作用于某些物质并改变其化学结构。
2.
a process that liberates or discharges something.
释放或放出某些物质的过程。
3.
the swelling of certain substances when they are heated (often accompanied by release of water).
某些物质在被加热的时候膨胀的过程。
4.
An allergy is an adverse reaction of the body to certain substances.
过敏是身体对某些物质的不良反应。
5.
a visible suspension in the air of particles of some substance.
空气中能看见的悬浮体，由某些物质的颗粒组成。
6.
A horny external covering that encloses the polyp colonies of certain hydrozoans.
（某些水螅体的）围膜包在某些水螅体外的角质物
7.
A gummy substance obtained from certain plants.
粘胶从某些植物上得到的粘性物质
8.
The underground water is very likely to have dissolved in it materials that help it dissolve certain rock materials.
地下水很可能含有某些溶解了的物质，这些物质能帮助地下水来溶解某些岩石的物质。
9.
X-rays can pass through some solid materials.
X射线能够透过某些固体物质。
10.
a physical theory that certain properties occur only in discrete amounts (quanta).
某些性质由量子产生的物理理论。
11.
The pith in the stems or roots of certain plants.
木髓某些植物茎或根中之髓质
12.
one of the bony outgrowths on the heads of certain ungulates.
某些有蹄动物头上一种骨质的突出。
13.
a critical analysis of the nature of something.
判断对于某些事物本质关键性的分析
14.
Research of some Enviromental Hormone with the Immune Analysis;
某些环境荷尔蒙物质的免疫分析研究
15.
A substance resembling the viscous substance exuded by certain plants, as in stickiness.
粘性物质，粘胶与某些树木渗出的粘性物质相似的物质，如在粘性里
16.
the image of something as reflected by a mirror (or other reflective material).
某些物体的像在镜子里（或其他反射性物质）反射。
17.
the act of changing something to bring it up to date (usually by adding something).
改变某物带给它新的时期（经常加入一些物质）。
18.
The substance was compounded with certain chemicals to make an explosive material.
这种物质与某些化学物品搀合制成炸药。