Defoliation can occur quite easily .

可以很容易出现落叶.

The winter makes , the defoliation of one along with autumnal winds and finally , fell the earth .

冬令，随着秋风中最后一片的落叶，落到了大地。

Influence of paraquat and defoliation on maturity , yield and quality of soybeans .

落叶剂与剪叶处理对於大豆成熟期、产量及品质之影响。

Study on content and relation of nutrition element of leaf before defoliation of apple seeding tree .

实生苹果树落叶前叶片矿质营养状况及相互关系的研究。

Branches exposed to sun by defoliation are extraordinarily susceptible to sunburn and will surely die .

分行暴露在阳光落叶非常容易晒伤，并肯定会死的。