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真题原句共 1 句
n. 视力1 次
(48) One possibility was that they merely used their eyes and tried out the plants they found, but that would probably result in a lot of wasted time and energy, not least because their eyesight is actually not very good.
（48）一种可能是，它们仅仅靠眼睛观察，并尝试所发现的植物，但这很可能会浪费大量时间和精力，尤其是因为它们的视力其实并不好。