tenacious sentence in Hindi

Examples

1. The new student's tenacious effort to learn English won him the admiration of all the teachers.
   नए छात्र के अंग्रेजी सीखने के दृढ़ प्रयास ने उसे सभी शिक्षकों की प्रशंसा का हकदार बना दिया।
2. Why would a leader who reached the top of a slippery pole through supreme guile, persist in so counterproductive a policy? His biographers, Efraim Karsh and Inari Rautsi, describe Saddam Hussein's characteristics as “obsessive caution, endless patience, tenacious perseverance, impressive manipulative skills and utter ruthlessness.” How could he not have cut his losses, acknowledged the nonexistence of his WMD program, and thereby have saved his dictatorship?
   उनके दृष्टिकोण से इससे भी बुरा यह रहा ,इस छल के कारण उन्हें सत्ता गंवानी पड़ी , उनके पुत्र को मृत्युदंड मिला और वे स्वयं भी गिरफ्तार या समाप्त होने वाले हैं ।