Couplet 1.
The first couplet: The grass is still shallow in spring;
The second couplet: The light smoke curls up and summer is just late.
Couplet 2.
The first couplet: The grass is still shallow in spring;
The second couplet: The cool breeze is still light in the summer heat.
ps: The upper and lower sentences are equal——
The previous sentence is: equal and equal
The next sentence is equal and equal