lead up [li:d ʌp]

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附加级

抢先

Tom concluded to let Huck lead up to the subject. 汤姆决定让哈克先开口谈这个问题。来自英汉文学 - 汤姆历险
The team built up an impregnable 5-1 lead. 这个队以5:1的绝对优势领先。来自《权威词典》