front spring fourth leaf clamp 前钢板弹簧第四片卡扣
inverse fourth leaf width 倒四叶宽度
lets of the fourth leaf 第四叶上的小叶
leaflets of the fourth leaf 第四叶上的小叶
Fourth, the activity of ascorbic acid oxidase in leaf and root were enhanced. The peroxidase activity in leaf was enhanced too.
第四，叶片与根中的抗坏血酸氧化酶及叶中的过氧化物酶活性显著增强；
The Fourth English Language Arts Festival of the Maple Leaf Elementary School is around the corner. Our kids tried their best to work out some splendid logos for this big English event.
枫叶小学第四届英语艺术节即将拉开帷幕，在此之际，孩子们用自己的双手和画笔设计出了别致的活动会徽。
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