一月至五月是少雨的前季风时期，孔布山谷平均每五天中就有一天笼罩在厚厚的棕色烟云下。
In the rainless pre-monsoon months between January and May, about one day in five saw the Khumbu valley blanketed in a dense brown cloud.
三月刮和风，雨下四月里，五月风光多美丽。
伦敦一年只下两次雨：八月到四月，五月到七月。
There are only two rains in London a year: August through April, and May through July.
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