Its safety depends wholly on its alertness , its acuteness of vision , its ability to be off like streak of lightning . इसकी सुरक्षा पूर्णतया इसकी सतर्कता , दृष्टि के पैनेपन , बिजली की चपलता की तरह भाग जाने की इसकी शक़्ति पर निर्भर है .
परिभाषा
the quality of having a sharp edge or point
a quick and penetrating intelligence; "he argued with great acuteness"; "I admired the keenness of his mind" पर्याय: acuity, sharpness, keenness,
a sensitivity that is keen and highly developed; "dogs have a remarkable acuteness of smell"
मोबाइल