There were heated exchanges on the issues of health care, tax, immigration, climate change and Iran.

各方就医疗、税收、移民、气候变化和伊朗等问题展开了激烈的讨论。

There have been heated exchanges during the latest televised debate between the main US Republican presidential hopefuls.

美国共和党总统候选人的有力竞争者在新一轮电视辩论中展开了激烈交锋。

Humans actually use counter current heat exchange too, although our blood vessels don't actually wrap around each other.

人类实际上也使用逆流热交换，尽管我们的血管实际上并没有相互缠绕。

And in space, where controlling liquids is even more problematic, the ability to have contained yet open-faced liquid structures could be ground-breaking for gas and heat exchange.

而在太空中，控制液体的问题甚至更多，拥有开放式液体结构的能力可能对气体和热交换具有开创性意义。

The project extracts non-radioactive steam from the nuclear power units as the heat source, and carries out a multi-stage heat exchange through stations and finally transmits the heat to households through the municipal heating pipe network.

它从核电机组中提取非放射性蒸汽作为热源，并通过电站进行多级热交换，最终通过市政供热管网将热量输送到家庭。