Sifting is important for soft, fluffy, and airy biscuits.

想要做出松软、蓬松、有气的酥饼，用筛子筛一筛是很重要的。

Well, Susan, I see what appears to be a dark vent.

嗯，Susan，我看见像是黑暗的通气的东西。

The Snotbot follows the whale to capture the mucus shot out from its blowhole.

Snotbot 会跟着鲸鱼，捕捉从它的气喷出的粘液。

The material is a kind of foam: a solid substance that is filled with air and is soft.

一种满是气的固体物质，手感柔软。

They had to breathe the poisoned air through the extremely small pores in their leaves.

它们不得不通过叶子上极小的气有毒的空气。

See the black smudges in the air vent?

看到通气上的黑色污渍了？

Every few cells, there are huge openings called stomata, like mouths, sucking in air and blowing out oxygen.

每隔几个细胞，你看到被称为气的巨大开口正如嘴入空气，并吐出氧气。

Dolphins make these sounds by forcing air through a nasal passage just beneath the blowhole.

海豚迫使空气穿过气之下的鼻道制造出声音。

The green leaves are covered with tiny holes, too small for our eyes to see.

绿叶上面, 满是细小的气。这些气小到我们的眼睛都看不见。

Even movement of the plant, whether from wind or something else, affects how reactive stomata are.

如果植物有所移动，那么无论是因为风还是其他什么原因而发生的移动，都会影响气的响应方式。

It's got these little pores called stomata, which open up so carbon dioxide can diffuse into the leaf.

叶子底部有些被称为气的小，气打开后，二氧化碳可以扩散到叶子里。

Their blowhole is just inches beneath the surface.

他的换气距海面只有几英寸。

So driven by the fumaroles, these caves are really active.

在喷气的推动下， 这些洞穴真的很活跃。

Whales, like all mammals need air, and come to the surface to breathe through a blowhole.

鲸鱼和所有哺乳动物一样，都需要空气。鲸鱼来到水面是通过气实现的。

But previous studies have shown that airier, fluffier breads do indeed taste saltier to testers.

但目前的研究已表明遍布气且蓬松的面包会更咸。

The skull also lacks a blowhole, another cetacean adaptation for diving.

颅骨上缺少一个可以进行适应性潜水的排气。

One toxin coronatine makes plants' stomata open up, allowing bacteria to enter more freely.

一旦毒素冠菌素打开了植株的气，细菌入侵就更畅通无阻了。

Lee didn't actually have taste-testers sample different types of pore-filled blocks—that's next.

李并有进行品尝各种不同气块状物的测试—那是接下来他们要做的。

Bigger eggs need more air holes. But if they get too big, the shell collapses.

蛋的体积越大，需要的气也越多。但如果过于巨大，蛋壳就会坍塌。

The whale let out a loud sound through its blowhole.

鲸鱼通过它的气发出响亮的声音。