245.As the trade winds lessen in strength，the ocean temperatures rise，causing the Peru current flowing in from the east to warm up by as much as 5℃.

英语四级译文:
随着信风强度的减弱，海洋温度升高，导致从东部流过来的秘鲁洋流温度升高5摄氏度。

四级词汇讲解:
本句的主干是temperatures rise。As the trade winds lessen in strength为状语从句;causing…为伴随状语，其中flowing in from the east为current的后置定语，flow和current之间为主动关系;by…为程度状语。trade wind的意思是“信风”。

flow in的意思是“不断涌入”。如:
The election results flowed in throughout the night.整夜不断传来各项选举结果。
warm up此处意思是“使温度升高”。

英语四级考点归纳:

warm up有以下几个常见含义:
※ “做准备活动”。如:
You have to warm up before swimming.在游泳之前你得先做准备活动热身。

※ “(机器等)预热”。如:
Don't forget to let the car warm up.别忘了让汽车预热。

※ “使更活跃”。如:
The party has begun to warm up.晚会开始热闹起来。