hot bed culture [农学] [园艺] 温床栽培
notch-bar hot bed 齿条式热床
rail-type hot bed 轨式温床
electric hot bed 电热温床
stacking hot bed 带收集装置的冷床
raise seedling in hot bed [农学] [园艺] 温床育苗
notch bar hot bed 齿条式热床
railtype hot bed 轨式温床
hot bed transfer 冷床移送机
N-COUNT If you say that somewhere is a hotbed of an undesirable activity, you are emphasizing that a lot of the activity is going on there or being started there. (不良活动的)温床 [with supp, usu N 'of' n] [强调]
...a state now known worldwide as a hotbed of racial intolerance.
...一个现已举世皆知的、作为种族歧视温床的国家.
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