1·The siskin is stretching out its neck to peck at the mantis, not knowing that a man carrying a slingshot is under it.
黄雀正伸长了脖子想去啄蝗螂，却不知道在它下面正有人拿着弹弓呢！
2·The mantis, pressing its body close in a concealed place, is intent on catching the cicada, not knowing that a siskin is hiding right behind it.
蝗螂把身子紧紧地贴在隐蔽的地方，只想去捕蝉，却不知道有一只黄雀早已躲在它的身后呢！