Thirty years ago, if you were walking along the coast of the Netherlands and picked a two-spot ladybug off the leaf of a European lime tree, chances were that the bug would be red with black spots.
30年前，如果你走在荷兰的海岸边，从菩提树上取下一只双斑瓢虫，你会发现这只瓢虫的颜色是红色黑斑的；
2
Gaolan No. 2 seedlings showed slightly lower growth rate but lower natural incidence by blackspot and leaf rust than that of Wuqi Non and Xining No 5 seedlings.
皋兰2号种苗次之，但皋兰2号种苗对黑斑病和叶锈病的自然发病率又低于吴旗11号和西宁5号种苗。
3
The survey found that the most serious diseases were black mould of Leucaena spp. , anthracnose of Desmodium spp. , Tubercularia leafspot of Glycine wightii spp. , and anthracnose of Arachis spp.