锂单质会结成晶枝样的长细金属丝，这就可能会造成短路，引发过热、火灾等安全问题。
This metallic form of the element may grow into filaments called dendrites that cause short circuits, and thus overheating and fires.
这些红线通过金属丝连接到河对面的细框上，细框固定在瀑布两边的树木和地面的岩石上，看上去很牢固。
The strings are carried on metal wires, which connect to a thin frame that crosses the river. This frame attaches to trees on either side of the water and is anchored to rocks on the ground.
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