The most immediate reason for the crisis is scorching heat. The past couple of months have been even hotter than usual in South Asia. In north-west and central India average temperatures in March and April were the highest since records began 122 years ago. As a result， air-conditioners in homes and offices have been whirring away at levels not usually seen until mid-May. That has come on top of already rising demand after the easing of covid-19 restrictions and an uptick in economic activity.
发音错误：scorching heat
have been whirring away
already rising demand
covid-19 restrictions
have been even hotter
In north-west and central India average temperatures in March and April were the highest since records began 122 years ago.
在印度西北部和中部，3月和4月的平均温度是过去122年有记录以来最高的。
主干：average temperatures were the highest.
地点状语：In north-west and central India
后置定语： in March and April是介词短语做后置定语，修饰average temperatures，不要误认为是时间状语。
时间状语从句：since records began 122 years ago是since引导的时间状语从句。