It's getting warmer day by day.是什么意思？

It's getting warmer day by day.

天气越来越暖和了.

getting

n. 获得（物），利益；v. 得到( get的现在分词 )，抓住，说服，受到（惩罚等）；

例句
Despite considerable pain she has been getting out and about almost as normal...
尽管还很痛，她已经基本上行动如常。

warmer

n. 使热的人，温热装置；adj. 暖和的( warm的比较级 )，保暖的，热情的，暖调的；

例句
Mrs Hastings' eyes grow warmer and more appreciative with my every word.
我讲的每句话让黑斯廷斯夫人的眼神变得越来越热情，越来越充满欣赏。

day

n. 一天，白天，时期，节日；adj. 日间的，逐日的；adv. 每天，经常在白天地；

例句
Avant-garde music to this day has not found general public acceptance.
先锋音乐时至今日都没有得到大众的广泛认可。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品