他的批评并不粗暴,却像锋利的手术刀一样切中问题核心。Tā de pīpíng bìng bù cūbào, què xiàng fēnglì de shǒushùdāo yíyàng qiē zhòng wèntí héxīn.His criticism was not rough, but like a sharp scalpel it cut to the heart of the problem.
这把菜刀很锋利,切菜时要特别小心。Zhè bǎ càidāo hěn fēnglì, qiē cài shí yào tèbié xiǎoxīn.This kitchen knife is very sharp, so be extra careful when cutting vegetables.
冰面裂开后,碎冰的边缘像刀一样锋利。Bīng miàn lièkāi hòu, suì bīng de biānyuán xiàng dāo yíyàng fēnglì.After the ice cracked open, the edges of the broken ice were as sharp as knives.