It is widely considered to be the finest and most expensive green tea in the world, is only available in the spring, and is rarely exported outside of Japan.
这种茶被认为是世界上最好也最贵的绿茶，只在春天有生产，一般不出口，日本之外几乎见不到。
The benefit appears to last only a few hours, so it may help to drink green tea at least twice a day.
这种作用大约持续若干个小时，所以每天喝两杯绿茶对减肥大有帮助。
China is the only country that produces non fermented tea (green tea), semi-fermented tea (Oolong tea), and other various kinds of fermented tea which also includes black tea.
中国是唯一一个生产非发酵茶(绿茶)，半发酵茶(乌龙茶)和其他各种类型包括红茶在内的发酵茶的国家。
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