Though plants lack brains, the firing of electrical signals in their stems and leaves nonetheless triggered responses that hinted at consciousness, researchers previously reported.

研究人员此前曾报告称，尽管植物没有大脑，但它们茎和叶所发出电信号能融发反应，这些反应能暗示意识存在。

Which is why plant stems and leaves look green.

因此植物茎叶都是绿色。

Every End of Heat solar term, after harvesting and picking indigo leaves, the mature stems and leaves are collected in a pine container, mixed with water and lime, and soaked.

暑，经过收割挑拣成熟板蓝根茎叶，被置于松木缸内与水、石灰一起漫泡。

She could barely see through the thick jungle of stalks and leaves.

她视线透不过这些浓密茎叶。

Hay comes from the stems and leaves of plants such as wheat.

干草来自小麦等植株茎和叶。

They grow so fast, their leaves quickly rise above the water and into the sunlight.

它们长飞快，茎叶迅速伸出水面，沐浴在阳光下。

So the difference between a stem and a leaf is obvious, right?

所以茎和叶区别很明显，对吧？

If you seal the tops of tomato plants in airtight plastic bags and expose one of them to a harmful leaf disease, the healthy plants will detect their neighbors' illness and begin making antibiotic compounds.

如果你用不透气塑料袋把番茄们茎叶部分密封起来，然后把一株番茄暴露在有叶子病毒里，健康植物们就会检测到它们邻居病，然后开始产生抗生素。

It holds up the leaves and the flowers, and spreads them out so that they can all get plenty of the fresh air and of the sunlight.

茎支撑着“叶”和“花”, 把它们分散开, 这样, 叶和花就都能到足够新鲜空气和阳光。

Even that is nothing new, since ancient times humans have been planting stems or leaves from other plants to make new ones.

即便如此，这也不是什么新鲜事，自古以来，人类就一直在种植其他植物茎或叶来制造新茎叶。

Gardeners around the world will be upset to hear that – those young aphids just love eating tomato plants!

世界各地园丁听到这个消息会很难过——那些蚜虫幼虫就喜欢吃番茄茎叶！

Today, some have names like " clubmoss" and " spikemoss, " but don't be fooled by the misnomers — they're not true mosses because they have roots, stems, and leaves.

今天，有些被命名为“杆藓”和“穗藓”，但不要被这些错误命名所迷惑——它们不是真正苔藓，因为它们有根、茎和叶。

Their epidermis, or outermost layer of tissue, produces billions of tiny hairs that absorb water and nutrients, and their vascular tissue transports the nutrients up to the stem and leaves.

它们表皮，或最外层组织，产生了数十亿根微小毛发，这些毛发吸收水分和营养，它们维管组织将营养物质运送到茎和叶。

And the trick to telling stems apart from leaves is to look for a bud nestled above the thing that looks like a branch.

区分茎和叶诀窍是在看起来像树枝东西上面找一个芽。

Like hearts and brains for us and stems and leaves for plants, organelles each have a unique job to do.

就像我们心脏和大脑以及植物茎和叶一样，个细胞器都有自己独特功能。

At the point where each leaf meets the stem, there's a bud, which is a new meristem that has the potential to grow into a branch and start producing its own stem and leaves.

在一片叶子与茎相遇地方，就会有一个芽，这是一个新分生组织，它有可能成长为一个分支，并开始产生自己茎和叶。

First, they all start as single-celled zygotes — made from a sperm cell and egg cell combo — that become multicellular embryos: the tiny beginnings of roots, stems, and leaves.

首先，它们都是从单细胞受精卵开始——由精子细胞和卵细胞组合而成——然后变成多细胞胚胎：根、茎和叶微小开端。

That’s why plant stems and leaves look green.

这就是为什么植物茎和叶看起来是绿色。

Vegetables are the roots, stems, and leaves of a plant.

蔬菜是植物根、茎和叶。

Kelp is a type of macroalgae, which means it doesn't have roots, stems, or leaves like plants.

海带是一种大型藻类，这意味着它不像植物那样拥有根、茎或叶。