A sitcom is half an hour long and it AIRS weekly.

每出情境喜剧是半个小时的长度，而且每个礼拜都会播出。

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There is no irritation caused by waiting for trains, buses or underground trains, standing in long patient queues, or sitting on windy plat forms, for as long as half an hour sometimes.

人们不会因为耐心排着长队等火车、公共汽车或地铁，或者坐在刮风的平台上长达半个小时而感到烦躁。

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The first segment is half an hour long, but you really need to watch it.

FORBES: Death To Education Reform

People in an fMRI scanner watched a half-hour-long sequence combining very short video clips of everyday scenes.

WSJ: How the Brain Really Works | Mind & Matter by Alison Gopnik

But given the state of music-buying, I don t know how long this idea of making an hour and a half of music, in one thought process, is going to survive.

NPR: Mick Jagger: A Stone Alone