ONE PHRASE, IN CONTEXT
sharp as a tack
头脑敏锐;反应很快

GET TO KNOW THE MEANING
读懂它,也学会这样说。
01头脑敏锐;反应很快
非正式。sharp 在此指聪明,不是物理上锋利。
IN A SENTENCE
My grandma is still sharp as a tack.
我奶奶脑子仍然灵得很。
"Can he follow the game?" "He's sharp as a tack. He caught you cheating last round."
“他跟得上游戏吗?”“他脑子灵得很,上一轮抓到你作弊了。”
