通过对小范围的人群演讲开始搭建你的演讲之塔。

Begin by speaking to smaller groups and build up from there.

在飞行蝗虫周围释放的小范围烟雾表明，实际气旋类似于模型预言的气旋。

Tiny packets of smoke released near a flying locust showed air swirls similar to swirls predicted by the model.

与锰结核像高尔夫球洞一样分散在海底不同的是，这些深海矿物层则在熄灭了的海底烟囱附近小范围内存在。

Unlike manganese nodules, which are like golf balls scattered across the seabed, these deep-ocean deposits occur in small areas around extinct hydrothermal vents.