丁凤1217
枫叶的英语：maple leaf.
1、枫叶所有的树叶中都含有绿色的叶绿素，树木利用叶绿素捕获光能并且在叶子中其他物质的帮助下把光能以糖等化学物质的形式存储起来。除叶绿素外，很多树叶中还含有胡萝卜素、黄色色素、红色色素等其他的一些色素。
2、枫叶的叶片中除了叶绿素外还有许多其它的色素如黄色的叶黄素、胡萝卜素，红色的花青素等，但因为叶绿素的含量较大而遮盖了其它颜色，使叶片呈绿色。到了秋天，叶绿素因为气温下降而渐渐分解，其它色素的颜得以显露出来。除此之外，枫叶中贮存的糖分还会分解转变成花青素，使叶片的颜色更加艳红。
MyronKiven
maple leaf英 [ˈmeipl li:f] 美 [ˈmepəl lif] n.枫叶; 槭叶This maple leaf is for you. 这片枫叶是送给你的There is a maple leaf in canada's national flag. 加拿大国旗上有片枫叶
疯哥觅食
The maple leaf is the characteristic leaf of the maple tree , and is the most widely recognized national symbol of Canada .A maple leaf is on the coat of arms of Canada, and is on the Canadian flag. The maple is a common symbol of strength and endurance and has been chosen as the national tree of many countries including Canada. Maple leaves are traditionally an important part of Canadian Forces military regalia. In the literary world, the word maple was first published in Geoffery Chaucer's "The Knights Tale" on line 2,065, spelled as "mapul". At the beginning of the eighteenth century, the settlements of New France had attained a population of about 18,000. Also by this time, the maple leaf had been adopted as an emblem by the French Canadians along the Saint Lawrence River.Its popularity with French Canadians continued and was reinforced when, at the inaugural meeting of the Société Saint-Jean-Baptiste in 1834, the maple leaf was one of numerous emblems proposed to represent the society. Speaking in its favour, Jacques Viger, the first mayor of Montreal, described the maple as "the king of our forest; ... the symbol of the Canadian people."The maple leaf slowly caught on as a national symbol: in 1868, it was included in the coat of arms of both Ontario and Quebec, and was added to the Canadian coat of arms in 1921. Historically, the golden maple leaf had represented Ontario, while the green maple leaf had represented Quebec. In 1867, Alexander Muir composed the patriotic "The Maple Leaf Forever," which became an unofficial anthem in English-speaking Canada. From 1876 until 1901, the leaf appeared on all Canadian coins, and remained on the penny after 1901. During the First World War, badges of the Canadian Expeditionary Force were often based on a maple leaf design. The use of the maple leaf as a regimental symbol extended back to the 1800s, and Canadian soldiers in the Second Boer War were distinguished by a maple leaf on their sun helmets.The maple leaf finally became the central national symbol with the introduction of the Canadian flag (suggested by George F. G. Stanley and sponsored by M.P. John Matheson) in 1965, which uses a highly-stylized eleven-pointed maple leaf, referring to no specific species of maple. Earlier official uses of a maple leaf design often used over 30 points and a short stem. The one chosen is a generic maple leaf representing the ten species of maple tree native to Canada—at least one of these species grows natively in every province.[4] The maple leaf is currently used on the Canadian flag, logos of various Canadian-based companies and the logos of Canadian sports teams. Examples include Air Canada, McDonald's Canada, General Motors Canada, the Toronto Maple Leafs NHL franchise, the Toronto FC soccer club, and Wendy's Canada (using the maple leaf in place of the normal apostrophe found at U.S. locations). It is also used by the Federal Government as a personification and identifier on its websites.Since 1979, the Royal Canadian Mint has produced gold, silver, platinum, and palladium bullion coins, which are officially known as Maple Leafs, as geometric maple leaves are stamped on them.
