介绍:
微信号：meiguolaolu("美国老卢"的拼音，验证码“喜马拉雅”)
公众号：老卢学堂
Assure/保证
You can use “I can assure you…” to make someone feel safe about something.
“Assure” comes from the word “sure” and means something is very sure.
Example:
“I can assure you that our products are the best in China.”
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