hot up [hɔt ʌp]

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附加级

加热，（使）变得紧张，热闹

After the hot dry summer, the soil is cracking up. 燥热的夏天过后，土地在龟裂。来自《简明英汉词典》
The unusually hot sun has fried up the crops. 罕见的烈日烤坏了庄稼。来自《简明英汉词典》