I don't know beans about cars.
我对汽车一窍不通。
He doesn't know beans about insurance business at all.
他对保险业务一窍不通。
I might say you don't know beans about a subject if you do not know anything at all about it.
我可以说你不知道一个主题豆子，如果你不知道它有关的一切事情。
This is his first visit in China. He doesn't know beans about Chinese culture and their way of life.
这是他第一次到中国来。他对中国的文化和风土人情一窍不通。
This is her first visit in China. She doesn't know beans about Chinese culture and their way of life.
这是她第一次来中国，她对中国的文化和生活方式什么都不知道。
How could you let him into the business of selling life insurance? He doesn't know beans about insurance at all.
你怎么能让他当人寿保险推销员呢？他对保险业务一窍不通。
The page designer does not need to know much about form beans, for example, beyond the bean names and the names of each field in a given bean.
例如，页面设计人员不需要清楚地了解表单bean，而只需要知道bean的名称和已知bean中每个字段的名称。
The rest of your application's code doesn't need to know or care about the implementation language of individual Spring beans.
应用程序其他部分的代码不需要知道或关心单个Springbean的实现语言。
Inquire about beans, tamping, the grind. Ask if you can watch them pull a shot, ask if they know the temperature, the pressure, how old the beans are, etc.
询问所用豆子、压粉方式、研磨粗细。问问他们是否能让你观看他们是怎么制作咖啡的，问问他们是否知道热水的温度、压力、咖啡豆的烘焙日期，等等。
Inquire about beans, tamping, the grind. Ask if you can watch them pull a shot, ask if they know the temperature, the pressure, how old the beans are, etc.
询问所用豆子、压粉方式、研磨粗细。问问他们是否能让你观看他们是怎么制作咖啡的，问问他们是否知道热水的温度、压力、咖啡豆的烘焙日期，等等。
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