口哨

The dog came to his whistle .

他一声口哨，狗便来了。

She whistle d her dog back.

她一吹口哨就把她的狗唤了回来。

He whistle d his dog back =He whistle d up his dog.

他吹口哨召唤狗。①口哨声；汽笛声；呼啸声

A: Can you whistle tunes while you do it, like Elise can?

你能不能在那样做的同时用口哨吹歌，像爱丽斯一样？

The sound of whistle is euphonious, emotional, and melodic.

口哨的音色悦耳动听，抒情性极强，极富歌唱性。

An instant after he issued with a lighted fagot, which he threw into thedarkness, whistling shrilly.

工夫不大，他拿了一束点着的干柴跑出来，把它扔在黑暗里，同时吹起了尖声的口哨。

Anything you like,' said the Footman, and began whistling.

任何你喜欢的'仆人说，开始吹口哨。

With these pleasant thoughts in mind, she walked to the outskirts of the forest and whistled for her horse.

一边想着这美妙的前景，丝屈哲走向森林的边界，吹响口哨召唤她的马。

This sepecoal frog have legs and wide feet.they have sticky pads at the ends of their toes.these sticky toe pads keep the tree frogs from falling.tree frogs gave different colors and markings on their skins.their eyes are different,too.some havegreen eyes ,and others have bright red ones.thesounds they make are differrent,too.one frig makes a sound like a dog barking.another frog makes a loud noise like a snore.there is even a frog that whistles!

这种特殊的青蛙长有腿和宽大的脚掌。脚指头尖上长有粘稠的护垫。这些粘稠的护垫可以保护他们不从树上掉下来。在树蛙的皮肤上会呈现出不同的颜色和标记。他们的眼睛也是不一样的。一些是绿眼睛，还有一些是鲜红色的眼睛。他们所发出的声音也是不一样的。他可以发出狗叫的声音，也可以发出很响的鼾声，他们甚至可以发出吹口哨的声音！

"Now, it's your turn to whistle, dad!" he said gaily.

扔到窗外，高兴地说："爸爸，现在该轮到你吹口哨了。"

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。