It's no coincidence that the acronym for Seasonal Affective Disorder is SAD.

并非巧合是, 节性情绪失调缩写是英文单词悲伤。

The seasonal options change depending on well I guess the season.

节性食材选择根据节而改变。

In this case, it's seasonal influences, probably again the amount of sunlight.

在这种情况下，它节性影响，可能会再次取决多少。

Holiday seasonal hiring will also kick into high gear.

节性假期用工潮也将开始提速。

It continues to be one of the most celebrated seasonal festivals across the world.

中秋节目前仍然是世界上最著名节性节日之一。

Scientists are still learning the causes of seasonal affective disorder.

科学家仍在了解节性情感障碍原因。

Real truffles are seasonal and pricey, with a short shelf life.

真正松露是节性，价格昂贵，保质期短。

Seasonality in retail spending, which includes restaurants, is also falling.

包括餐馆在节性零售支出也在下降。

And now it's our biggest selling seasonal pizza all year.

现在它是我们全年最畅销节性披萨饼。

The exact cause of this disorder remains unknown.

节性情绪失调确切病因尚不清楚。

I'm talking about, um, most people, not people with SAD.

我现在说是大部分人，不包括有节性情感异常人。

And again not for people, for example, who have seasonal affective disorder.

另外这个不包括，有节性情感异常患者。

Saint Laurent and Gucci are rethinking the seasonal production of the fashion industry.

圣罗兰和古驰正在重新考虑时装行业节性生产。

A toxic flowering of " cyanobacterium" was found in seasonal water sources in the area.

在该地区节性水源中发现了有毒“蓝藻细菌”。

She and her family of seven have spent weeks looking for seasonal truffles.

她和家里剩下七口人花费数周时间寻找节性松露。

Beneath the waves, there's a growing population of other seasonal visitors, white sharks.

在波涛之下，还有其他节性游客数量在不断增加——白鲨。

And seasonal items tied to a holiday need to arrive on time.

与假日相关节性物品需要准时到达。

Much of Laos has recently been hit by floods from heavy seasonal rains.

老挝大部分地区最近都受到节性降雨洪水袭击。

But that's a seasonal trend it's the holiday period for our major clients.

但这是节性趋势，这段时间里，我们主要客户在度假。

So that's really what characterises what we call Seasonal Affective Disorder known as 'winter blues'.

这就是我们所说节性情绪障碍特征，也就是“冬忧郁”。