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First sign of potassium deficiency is the loss of the normal green color at the leaf tips．This is followed by a necrosis or“leaf scorch”. 最初的缺钾症状是叶尖失去正常的绿色，随后发生坏死或呈烧焦状。这些症状首先出现在基部的枝条或果枝的叶片上，以后逐渐向嫩叶发展。
I could not wash away the mark of the scorch. 我洗不掉这焦痕。
The olive leaf is a badge of peace. 橄榄叶是和平的象征。
The meat will scorch if you don't lower the gas. 如果你不把煤气调小一点，肉就要焦了。
I saw him take a leaf out of the book. 我看见他从书上撕下一页。
The maple leaf is the emblem of Canada. 枫叶是加拿大的象征。
This material will scorch easily if it is too near the fire. 这种材料如果太靠近炉火很容易烤焦。
The trees and shrubs were in full leaf. 那些树和灌木枝叶茂盛。
One of several metal strips forming a leaf spring. 簧片构成片簧的几个金属片中的一个
The central or principal vein of a leaf. 中脉中心的或主要的叶脉
The trees come into leaf in spring. 春天，树木吐芽长叶。
Young drivers often scorch on the street. 年轻司机常在大街上开快车。
You should take a leaf out of Tom's book. 你应该学学汤姆。
I can not wash away the mark of the scorch. 我洗不掉这焦痕。
A leaf came upon her book as she was reading. 她正读著书,一片树叶落到她的书上。
The trees are just beginning to leaf. 树刚刚开始长叶子。
Not a leaf nor an insect stirred. 不单是树叶，连个虫子都不动。
The giraffe eats tender leaf from the tree highly. 长颈鹿从高高的树上吃掉嫩树叶子。
The maid scorch the shirt in ironing it. 女佣在烫衬衫时把它烫焦了。
The falling leaf spiralled to the ground. 落叶盘旋著飘到了地上。