adj.打不破的,不易碎的;钢铁;
例句:
Unbreakable unity, inseparable conjunction between the two.
这个合一是不能破坏的, 两者不能分开.
unbreakable glass
打不碎的玻璃
One quality of this plastic is that it is almost unbreakable.
这种塑料有个特点是不易断裂.