It was really challenge to speak before so lare an audience.
给那么多的人讲话对我来说的确是个挑战。
I'm glad you think so. It was really challenge to speak before so large an audience.
你这么认为我很高兴。给那么多的人讲话对我来说的确是个挑战。
I have been asked to speak about the health challenge: where do we stand?
我接受邀请谈谈卫生挑战：我们处在什么位置？
It was at the beginning, but I like to challenge myself. So it was a challenge for me to speak another language.
一开始是有担心，因为要学一门新语言确实很难，但我喜欢自我挑战。
It was at the beginning, but I like to challenge myself. So it was a challenge for me to speak another language.
一开始是有担心，因为要学一门新语言确实很难，但我喜欢自我挑战。
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