羽絨服里穿薄點才暖和？網友：鑒定為真

臨近11月，全國多地迎來了降溫天氣，許多人已經穿上了羽絨服。

此前，話題“為什么羽絨服里穿薄點才暖和”沖上了熱搜。

A trending topic explaining why "wearing fewer layers underneath your down jacket keeps you warmer" has sparked lively discussion online.

一些網友表示，親身試驗，鑒定為真：

另一些有網友表示不相信：

也有網友表示關鍵羽絨服里得是真羽絨：

還有網友不禁發出疑問：到底為什么羽絨服里穿薄點才暖和？是真的嗎？

其實，不少文章等都曾提到，“穿得越多越暖”是一個誤區。

穿衣保暖的關鍵在于有一定的厚度，并且有足夠的空氣層。

In fact, "the more layers you wear, the warmer you are" is actually a misconception. The key to staying warm lies not just in thickness, but also in maintaining adequate air flow between layers.

空氣層指的是衣服和人體之間含著空氣的間隙。由于人體不斷散熱，會把空氣慢慢加熱，此時，空氣便起到了保暖層的效果。

An air layer refers to the space between your body and clothing that traps air. As your body continuously releases heat, it warms this trapped air, which then acts as an insulating layer.

那么，是不是層數越多、衣服里存的空氣越多，整體的保暖性也就越強了呢？

其實，事情并不是這樣！

我們可以把人體想象成一個圓柱體，衣服件數越多時，件與件之間會出現新間隙，新間隙又能容納空氣——最終就會造出一個很厚重的空氣層。

圖源：丁香醫生

而當空氣層太厚時，空氣層從內至外就會產生比較明顯的溫差。這時，空氣將不再靜止而是會流動起來，這就是“熱對流”。

一旦發生了“熱對流”，熱量的流失反而會更快。

Think of the human body as a cylinder. When you wear multiple layers, new gaps form between each piece of clothing, each capable of holding air — ultimately creating a very thick air layer. However, when this air layer becomes too thick, a significant temperature difference develops between its inner and outer parts. This causes the air to circulate rather than remain still — a phenomenon known as "thermal convection". Once thermal convection occurs, heat loss actually accelerates.

除了溫差導致“熱對流”，層數太多還會把空氣層擠薄。當層數超過某個值后，衣服層與層之間的空氣存量，反而會隨著衣服層數的增加而減少。

特別是在戶外走動時，衣服隨著身體動作出現相互摩擦、擠壓，這會加速衣服間空氣層流動，加劇熱量散失。

Besides triggering convection, too many layers can also compress the air spaces between them. Beyond a certain point, adding more layers actually reduces the amount of trapped air between garments. This effect is especially noticeable during outdoor activities, where body movement causes clothing to rub and compress against each other. This disrupts the air layers and speeds up heat loss.

反而，穿的件數少，空氣層會相對薄些，不易引發熱對流。并且人體散發的熱量也會充斥著整個衣下空間，內部冷熱相對均勻一些，體感上更暖和。

On the contrary, wearing fewer layers results in a thinner, more stable air layer that is less prone to convection. Body heat can then evenly fill the entire space beneath the clothing, creating a more uniform and warmer microclimate.

根據這個原理，在寒冷的冬天，我們可以參考這個“三明治”穿搭公式：

圖源：丁香醫生

當然，如果你的抗寒能力強，可以再減少中層，穿件加絨速干服或者長袖T恤，外面套一件防風羽絨服就足夠啦。

說起羽絨服，大家知道各種冬季保暖裝備的英文表達嗎？快來一起學習吧。

羽絨服 down jacket

長大衣 overcoat

防風夾克 windbreaker

連帽衛衣 hoodie

毛衣 sweater/jumper

開襟毛衣 cardigan

秋褲 long underwear/long johns

保暖內衣 thermal underwear

耳套 earmuffs

連指手套 mitten

五指手套 glove

靴子 boots

編輯：李金昳

實習生：李然

來源：外研社UNIPUS 科普中國等

跟著China Daily

精讀英語新聞

“無痛”學英語，每天20分鐘就夠！