上茧：茧形、色泽、茧层厚薄及缩皱正常，无疵点的茧。
“我们生活在被网络茧壳包裹的地球上，”贝克匀说。
"We live in a cyber cocoon enveloping the Earth," Baker said.
在茧上，细菌通过产生一种至少9种不同抗生物质的组合剂，来抵抗很广泛的系列潜在有害真菌和细菌。
On the cocoon, the bacteria provide protection against a wide range of potentially detrimental fungi and bacteria by producing a cocktail of at least nine different antibiotic substances.
最后这条毛毛虫把自己黏附在一棵植物上结成个茧儿。
Eventually the caterpillar will attach itself to a plant and sin a cocoon.
应用推荐