充电用英语怎么说？

请充电用英语是Please charge。

充电原理：

蓄电池从外电路接受电能，转化为电池的化学能的工作过程。蓄电池在其能量经放电消耗后，通过充电恢复，又能重新放电，构成充放循环。

一般用直流电流(也有用不对称交流电流或脉冲电流)充电。

不同情况下，采用不同的充电方法如恒流充电、恒电压充电、浮充电、涓流充电、急充电或这些方法的组合式充电等。

请问：“高端市场”英文怎么说？中低端呢？

高端市场：high end market

中端市场：mid-range market

低端市场：low end market

以下是高端市场说法的依据：

以下是中端市场的表达 mid-range market 的依据：

optimal是什么意思

optimal的意思：最佳的，最适的。

短语

Optimal solution [数] 最优解 ; 最适解 ; 最优方案

Optimal Protection 优化保护

optimal choice 最佳选择 ; 本最佳选择

optimal strategy [数] 最优策略 ; 最做出策略 ; 最佳策略 ; 最做出计谋

Optimal Method 最优化方法 ; 最优化要领

Optimal Flexible Architecture 优化自由结构 ; 最佳灵活体系结构 ; 最佳灵活架构 ; 结构

同根词

词根： optimal

adj.

optimum 最适宜的

adv.

optimally 最佳；最适宜

n.

optimum 最佳效果；最适宜条件

optimization 最佳化，最优化

354、英语小故事（中英对照）“一套画笔和颜料”

One day a famous painter painted a picture and put it on exhibition with the tag line, "Not for sale".

一天，一位著名的画家画了一幅画放在展览上，上面还标记了一行字：“非卖品”。

But, it was so beautiful a painting that whosoever（无论是谁） attended that exhibition asked the painter to sell that painting for whatever amount he would ask for it.

但是，这幅画实在是太美了，来参加展览的人都想买这幅画，无论画家要价多少都行。

But everytime, he said, "I'm extremely sorry but I can't sell this for any amount. I will sell it to only that person who will understand its value."

但每次，画家都说：“非常抱歉，这幅画多少钱我都不卖。我只会把它卖给懂得它价值的人。”

Then, an old man came to that painter and said, "I want to buy this painting and here is the price in this **all box for it."

这时，一位老人走到画家跟前，对他说：“我想买这幅画，这个小盒子里是我给它开的价格。”

The painter took that box and opened it. In it, there was a paint brush and colors. And, he gave that painting to the old man.

画家接过盒子，打开了它。里面有一只画笔和一些颜料。他把那幅画给了老人。

All the other people surprisingly asked the painter, "Why did you sell it for a paint brush and few colors to this old man? We were offering you huge amount for this painting. Are you crazy?"

所有的人都惊讶地问画家：“你为什么要为了一只画笔和很少的颜料就把它卖给这个老人？我们出高价买这幅画。你疯了吗？”

The painter said, "If you noticed the painting, there is a man who is teaching a kid to paint with so much dedication. So, the man in the picture is this old man and that kid is me. He is my teacher who taught me to paint and whatsoever I am today just because of his dedication and blessings.

画家说：“如果你仔细看这幅画，你会发现上面有一个男人正在投入地教一个孩子画画。所以，照片中的男人是这位老人，那个孩子是我。他是我的老师，是他教会了我绘画，我是因为他的奉献和祝福才成为今天的样子。

And, the real value of this painting is just a paint brush which is given by my teacher as this paint brush is more valuable than your wealth. With this paint brush I can paint many more paintings."

这幅画真正的价值是我老师送给我的画笔，因为画笔比你们给的金钱更有价值。有了这个画笔，我可以画更多的画。”

All people understood and respected the bonding of a teacher and his student.  Hats off（致敬） !

所有人都理解和尊重这份师生关系。为之致敬！

A teacher always gives his best wealth to his student in the form of knowledge, wisdom and art with an expectation that his student will optimally（最佳） utilize it.

老师总是以知识、智慧和艺术的形式把他最大的财富给他的学生，并期望他的学生能最大化地利用这些财富。