He shot light from a laser out the end of the cable onto the diaphragm.
他从一激光器射出光束，正对有电缆一端的振动膜上。
Normally a diaphragm so thin would be transparent, allowing the laser's light to escape.
一般说来，如此超薄得振动膜应该是透明的，可允许激光束穿过。
Instead of letting it pass, the holes would reflect the light back toward the tip of the fibre optic cable, effectively turning the diaphragm into a mirror even as it still allowed water to pass.
不同于让光线透过，相反地，通过纤维光缆的一端，纳米孔会将光线反射回去，极有效地将振动膜变成一面镜子，即便水流可以通过。
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