陷阱: pitfall, snare, trap...
换: to exchange, to change (clothes etc), to substitute, to switch, to convert (currency)...
之间: between, among, inter-...到...之间...dào... zhī jiān...
减速: to reduce speed, to slow down, to take it easy...
用不着: not need, have no use for...
这么: so much, this much, how much， this way, like this...
批发: wholesale, bulk trade, distribution...
