leaf的复数（leaf的复数的规则）
lant make its food in its leaves or in its flower?
译句：植物是在它的叶子里还是花里制造自身的食物？（答案附在文末）
leaves /livz/ n. 树叶，花瓣（leaf的复数）；v. 离开（leave的第三人称单数）
惯用语：
autumn leaves 秋天的落叶
bamboo leaves 竹叶
leaves of grass 草叶集
collect leaves 收集树叶
例句：
• Maple leaves glowed red in the sunlight.
枫叶在阳光里闪耀着红光。
• The leaves start to color in autumn.
树叶在秋天开始变色。
• The next bus leaves in 15 minutes.
下一趟巴士将在15分钟后离开。
flower/'flaʊɚ/ n. 花, 花朵, 精华; vi. 开花, 繁荣, 成熟
惯用语：
wild flower 野花
flower bud 花芽，花蕾
lotus flower 荷花，莲花
flower garden 花园；庭园
flower show 花展
artificial flower 人造花
jasmine flower 茉莉花
purple flower 紫罗兰
例句：
• The bee is going from flower to flower.
那只蜜蜂在花丛间飞来飞去。
• The air was scented with spring flowers.
空气中充满了春天花朵的芳香。
• There was a flowering of the arts between the wars.
在两次战争之间曾有过一次艺术繁荣期。