A bird must weave these materials into a nest.
鸟必须把这些材料织成巢。
These materials are now known to let out harmful gases.
这些材料被公认为会释放有害气体。
Can you think of everyday items made of these materials?
你能想到用这些材料制成的日常用品吗？
These materials turn from a solid into a liquid absorbing energy as they change phase.
这些材料在相变时从固体转变为吸收能量的液体。
Third, there is evidence that these materials work, and that schools can achieve something.
第三，有证据表明这些材料是有效的，学校可以有所作为。
这些材料都是免费的。
But all these materials are free.
但这些材料都是免费的。
这些材料都是真实的吗？
They can do research into these materials.
他们可以深入研究这些资料。
These materials exhibit low strength.
这些材料具有低强度。
This is the purpose of these materials.
这就是这些资料的目的。
These materials also stick to chamber walls.
这些材料也会粘附于工作舱的墙壁。
These materials are now valueless to us.
这些材料现在对我们毫无价值了。
I've already sent these materials to you!
这些资料我已经寄出去给你了！
These materials would make the wearer invisible.
这些材质能让穿戴者隐遁无踪。
The solar cell is made from these materials.
太阳能电池是由这些材料。
Would you please copy these materials for me?
麻烦您帮我复印这些材料。
We should make these materials of most value.
我们必须使这些材料变得很有价值。
These materials have been digested into a book.
这些材料已被汇编成书。
These materials can all be completely recycled.
这些原材料可以被再利用。
As a rule these materials do not show hysteresis.
一般说来，这些材料不显示磁滞现象。
These materials may not require further treatment.
这些材料可能不需要进一步处理。
We could only build one house with these materials.
这些材料只够我们盖一栋房子。
These materials are ready, my mother began to wash the fish.
这些材料准备好了，我母亲就开始洗鱼。
Could you please find these materials in the library for me?
请你帮我在图书馆内找这些资料好吗？
The problem is getting these materials from point A to point B.
问题在于需要把这些原料从点A运输到点B。
The problem is getting these materials from point A to point B.
问题在于需要把这些原料从点A运输到点B。
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