lead-in

音标发音

Moreover, the explanatory prose is haphazard (and not infrequently wrong or incoherent -- for example, I cannot make heads or tails of the lead-in to the very first example, prime.py).
此外，解释性叙述是随意的（并且经常出错或语无伦次 — 例如，我找不到第一个示例 — prime.py — 的介绍的开头或结尾）。
The value model will have inputs such as market size, growth rate, prices, discounts, and lead-in to sales of other products; the model computes how these combined inputs translate to license sales.
价值模型的输入包括市场规模，增长率，价格，折扣，其他产品的销售广告，等等；模型计算出这些组合起来的输入如何变为产品销售。
The Secret Circle got off to a magical start Thursday, retaining 100 percent of its Vampire Diaries lead-in among total viewers and nearly matching VD in the demo.
《神秘圈》第一集紧跟在《吸血鬼日记》之后开播，数据显示这部新剧几乎完全保留了在自己之前播出的《吸血鬼日记》收视人群，第一集收视率几乎就和吸血鬼日记并驾齐驱。
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Between nineteen fifty-three and nineteen fifty-nine she appeared in lead parts in many popular movies: "How To Marry a Millionaire."
Everything is interconnected on the higher level on a spiral-- in other words will lead to deep understanding and hopefully assimilation of the material.
所有内容在一个更高的水平上呈螺旋状互相联系-,换言之，会带来深刻的理解和我所希望的对材料的吸收。
哈佛公开课 - 幸福课课程节选
It could be those differences that they experience in their extracellular environment that lead to their choice to either self-renew or to become committed.
有可能就是由于,这种细胞外环境的不同,最终导致它们自我更新,或者成为定向的祖细胞
耶鲁公开课 - 生物医学工程探索课程节选

Last week, the newsmagazine drew nearly 8 million viewers in the slot, a respectable Leno lead-in on an otherwise little-watched night.
FORBES: Hollywood

something that introduces something else, such as the words and music that are used to introduce a television programme

A lead-in is something that is said or done as an introduction before the main subject or event, especially before a radio or television programme.