Conversational analysis is seen as one sub-field in discourse analysis, while turn-taking is the core in conversational analysis.

会话分析被认为是话语分析的一个分支领域，而话轮转换是会话分析的核心问题。

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We might even go further and argue that history has become a sub-field of biology, focusing on the behaviour of one animal, Homo sapiens.

我们可能需要更加深入地把历史学当作生物学的分支学科来研究，专注研究一种动物的行为表现，那便是智人。

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Object recognition and tracking is an important research sub-field in computer vision, which has attracted great concerns of researchers.

目标识别与跟踪属于计算机视觉研究领域的一个重要分支，引起了学者们的高度关注。

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Hernandez can double as a running back, and Gronkowski is 6-foot-6 and 265 pounds, and barrels down the field like a Sub-Zero fridge with legs.

WSJ: Jason Gay: Not Perfect but a Super Rematch

Broad to bowl from the Nursery End, first ball is a wild full toss which is pinged to third man for a single by Pathan - sub fielder Eoin Morgan is on the field.

BBC: ICC World Twenty20 day 10 as it happened

Lawyers do not know all the sub-divisions of medicine and are not aware of when an expert is moving outside of his field.

BBC: Read your comments