固

sure

strong

solid

hard

固[gù]

-（结实;牢固;坚硬）firm;hard;solid:
strong;坚固
firm;stable;稳固
-（坚决地;坚定地）firmly;resolutely:
firmlyinvite;固请
resolutelyrefuse;firmlydecline固辞
-（本来;原本）originally;inthefirstplace;asamatterofcourse:
Itisjustasitshouldbe.固当如此。
-（固然）certainly;admittedly;assuredly:
Admittedlywecanmakethejourneybytrain,butthereisnoharminourtravellingbyboat.乘车固可，乘船亦无不可。
-（使坚固）solidify;consolidate;strengthen:
strengthenthedyke固堤
-（保卫;防御）defend:
It'snothighmountainsanddeepvalleysthatbestservetodefendacountry.固国不以山溪之险。
-（姓氏）asurname:
GuCheng固乘

乾酪是固体，奶是液体。
Cheese is a solid; milk is a liquid.

冰是水的固体状态。
Ice is water in solid state.

水结冰时便变成固体。
Water becomes solid when it freezes.

他们建造了一个坚固的城垛。
They built a strong battlement

这个防卫墙很坚固。
The battlement is very strong.

这座桥不够牢固，车辆不能通行。
The bridge is not strong enough to allow the passage of vehicles.

这地基不够牢固，无法承受房屋的重量。
The foundations were not strong enough to sustain the weight of the house.

北京有很多坚固而雄伟的城楼。
There are many strong and stately towers in Beijing.

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