leaf scorch

基本解釋

First sign of potassium deficiency is the loss of the normal green color at the leaf tips．This is followed by a necrosis or“l(fā)eaf scorch”.
最初的缺鉀癥狀是葉尖失去正常的綠色，隨後發(fā)生壞死或呈燒焦?fàn)?。這些癥狀首先出現(xiàn)在基部的枝條或果枝的葉片上，以後逐漸曏嫩葉發(fā)展。
I could not wash away the mark of the scorch.
我洗不掉這焦痕。
The olive leaf is a badge of peace.
橄欖葉是和平的象征。
The meat will scorch if you don't lower the gas.
如果你不把煤氣調(diào)小一點(diǎn)，肉就要焦了。
I saw him take a leaf out of the book.
我看見他從書上撕下一頁(yè)。