They behaved deplorably.

他们的表现糟透了。

《牛津词典》

He would have been very pleased with the money and the recognition, but he would also have thought the competitive element deplorably vulgar.

他对这笔奖金和人们给予的承认会相当满意，不过也会把这残酷的竞争视为粗俗的表现。

youdao

At a time when half of the world is suffering from starvation, poor health and a deplorably low standard of living we simply cannot take lightly the population problem.

当今时代，世界上还有一半人口遭受着饥荒，当今时代，世界上还有一半人口遭受着饥荒，健康状况不良以及生活质量低下，状况不良以及生活质量低下，我们决不能再轻视人口问题。口问题。

youdao

This is slowing, among other things, the already deplorably tardy spending of European Union money.

ECONOMIST: Bulgaria tackles corruption

And they want the government - including the political class - to demonstrate that it is serious about combating corruption, without making it a deplorably partisan issue.

BBC: India's activists on warpath against the government

The worldwide standing of those institutions is deplorably low.

ECONOMIST: Liberalism lives | The