ensure 
: 确保 保证 担保 
ensure 
chắc chắn like: ensure → →
to maintain law and order, ensure security, keep peace ☊ 
bảo an ☊ to guarantee, ensure safety, security ☊ bảo đảm an toàn ☊ The rules are there to ensure everyone's safety and enjoyment. ☊ enjoyment ☊
ensure sth: The book ensured his success. ☊ ensure ☊
ensure sb sth: Victory ensured them a place in the final. ☊ ensure ☊
ensure (that)...: Please ensure (that) all lights are switched off. ☊ ensure ☊
Ensure there is a free flow of air around the machine. ☊ free ☊
Please ensure that you purchase your ticket in advance. ☊ purchase ☊
You must take all reasonable steps to ensure that the information that you provide is correct. ☊ reasonable ☊
responsibility (to do sth): It is their responsibility to ensure that the rules are enforced. ☊ responsibility ☊
They are introducing new measures to ensure the smooth running of the business. ☊ smooth ☊
They could not ensure a smooth transfer of political power. ☊ smooth ☊