challenging: 有挑戰性的
Many enjoy the mental stimulation of a challenging job.
很多人喜歡富有挑戰性的工作所帶來的強烈的精神刺激。
be about to: 即將
He knew roughly what was about to be said.
他大概知道要說些什么。
turn down: 拒絕
There's no reason whatsoever to turn down this suggestion.
沒有任何理由拒絕這個建議.
Before this I'd have smiled and turned her down...
在這之前,我本該笑著拒絕她。
walk away: 走開
He turned with a little nod and I watched him walk away.
他邊點了點頭邊轉過身,我看著他走了。
The dancers began to walk away from the floor.
跳舞的人們開始離開舞池。
adj. 大膽的(復雜的,有前途的,挑戰的) n. 復雜