Of course, a biologist can tell you that even when straining you can't read by the light of a few fireflies--let alone plough, spin, weave or take a journey--and you might hurt your eyes trying.
當然，在生物學家看來，光憑幾隻螢火蟲的光源，苦讀未成，恐怕早已老眼昏花，就更別提犁地紡紗、織麻照路了。