Effects of four kinds of crucifer on growth and behavior of metasyrphus corollae .

4种植物对大灰食蚜蝇生长发育及行为的影响。

The crucifer of blood was originally a play adapted from conan doyle 's the sign of four .

“血的十字架”本来是由柯南道尔另一部作品“四个人的签名”改编而来的。