碰到一些英文的阅读问题想请教各位，谢谢。
1. And I basically just draft right behind what could be a conga line of F150s
with chainsaws and use them to cut a path back to my study sites.”
1-a. 这边的draft right behind是指他计画并全力支持这件事情吗?
1-b. cogna line只知道是一种康加舞蹈，那跟F150s，还有后面的电锯又有什么关系呢?
2. The spiders come in two personality types: docile and aggressive.
2-a. 在这边的come in 是意旨演变成的意思吗? 还是我应该要理解成
The spiders come in two personality types?
蜘蛛演变成两种不同的性质
3. 因为问版的问题种类比较多，有人可以推荐英文阅读文法的讨论区吗? 谢谢。
内容来源:
https://www.scientificamerican.com/podcast/episode/how-hurricanes-influence-spider-aggressiveness/#transcripts-body