dustbowl

n.长期遭受尘暴和干旱的地区

For arena you can go for 3-5 depending if you are teching or going for a spam win.For dustbowl however, i suggest only 2 as there is no blue tib. 在竞技场你可造3-5座重工取决于是攀科技还是暴兵，但是由于沙漏没有蓝矿，我建议2座重工就够了。