She seems quite happy to tag along with them.她好像很乐意跟着他们。I let him tag along because he had not been too well recently.我让他跟着我，因为最近他身体不舒服。Why did you tag along, when you should be studying?你怎么来了你不是应该在学校的 吗 ?...
The bluetongue virus replicates in the insect.蓝舌病病毒在这种昆虫体内繁殖.The chameleon's skin replicates the pattern of its surroundings.变色龙的皮肤可随环境的模式而改变颜色.These results may offer new clues how the virus replicates in vivo.这些发现...