as sharp as a needle 非常机敏的 ; 十分精明 ; 很有鉴别力的 ; 异常精明
As well as needle-sharp claws, the undersides of the feet are covered with short, spine-like scales, which ensure a firm grasp.
同样它也是锋利的鹰爪,在鹰爪的下面有一个短而象倒刺一样的脚掌,以确保紧紧地抓住猎物。
Young though he was, the child was as sharp as a needle and sensed the disharmony between his parents.
虽然这孩子还小,但很聪明,他觉察到他父母之间不和谐。
The child was as sharp as a needle and soon began to use different words.
这孩子非常聪明, 很快就开始运用不同的的词汇了。
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