尝试理解

Turning me around by one arm, he moved a broad flat hand along the front vista, including in its sweep a sunken Italian garden, a half acre of deep, pungent roses, and a snub-nosed motor-boat that bumped the tide offshore.

他用一胳膊把我转过去，对着眼前的的景色大手一挥，指点起江山来，他的手划过的地方包括一个破落的意大利花园，半亩带刺的玫瑰，和一首乘风破浪塌鼻机船。