求翻译：国内主要的展览会主要是：中国进出口商品交易会，又称广交会（CANTON FAIR），创办于1957年春季，每年春秋两季在广州举办，迄今已有五十多年历史，是中国目前历史最长、层次最高、规模最大、商品种类最全、到会客商最多、成交效果最好的综合性国际贸易盛会。是什么意思？

Mainly in major exhibitions: China Import and Export Fair, also called Canton Fair (CANTON FAIR), founded in the spring of 1957, held in Guangzhou every spring and autumn, so far, 50 years of history, the history of China's current the longest, the highest level, the largest and most complete variet

The exhibition is mainly within the Major: Chinese Export Commodities Fair, also known as Canton Fair (CANTON FAIR) was founded in 1957, spring, spring and autumn each year held in Guangzhou, and so far there are more than 50 years of history, China is currently the longest history, the highest leve

The domestic main exposition mainly is: China import-export goods trade fair, also called the Guangzhou Export Commodities Fair (CANTON FAIR), organized in 1957 the spring, the Spring and Autumn Period two seasons conducted every year in Guangzhou, until now already some more than 50 years history,

Main exhibitions mainly in China: China import and export commodities fair, also known as the Canton fair (CANTON FAIR), founded in the spring of 1957, held in Guangzhou in autumn each year, so far, more than 50 years of history, history of China's longest, highest level, the largest and the largest

The domestic and main exhibition is mainly: China's import and export trade fair, was also called the Guangzhou Export Commodities Fair (CANTON FAIR), established in the spring of 1957, every spring and autumn is held in Guangzhou, has already had a history of more than 50 years so far, China histor