Abortion is a highly contentious issue.是什么意思？

Abortion is a highly contentious issue.

堕胎是一个非常有争议的课题。

abortion

n. 流产，流产的胎儿，畸形，夭折；

例句
There are many people who still find the act of abortion abhorrent.
仍有很多人对堕胎行为表示厌恶。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

highly

adv. 高度地，极，非常，非常赞许地；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

contentious

adj. 引起争论的，有争论的，爱争论的，爱议论的，矫情；

例句
Sanctions are expected to be among the most contentious issues.
制裁可能会是争议最大的问题之一。

issue

n. 问题，议题，（报刊的）期，号，发

例句
The Queen remains above criticism, apart from the issue of her tax liability...
抛开她的纳税义务不谈，女王一直无可指摘。