查询词典 vain

She tried in a vain attempt to whistle, but her lips were too cold and dry.

她徒劳地试着吹口哨，但她的嘴唇太冷太干燥了。

He made a vain attempt to reach the drowning child.

他试图接近那个快淹死的小孩，但没有成功。

Next day I made a vain attempt to look for work, walking from house to house.

第二天，我徒劳地挨家挨户去找工作。

In spite of you using the best make-up,it is a vain attempt.

尽管使用最好的化妆品，也已于事无补。

He made a vain attempt to reach the summit of the mountain .

他们达到山顶的企图未成功。

Across the city in a vain attempt to find their lost son.

他们在全城徒劳奔波，无法找到失去的孩子。

A'.'' vain attempt to find their lost son.

他们在全城徒劳奔波，无法找到失去的孩子。

A tight noseband is a vain attempt to disguise the fact that your horse is not ready for the things you are asking him to do.

紧的鼻革是徒劳的掩饰，它只能说明你的马没有准备好去做你要求他做的事情。

Of course, your start-up might prove a vain attempt at the prize, so you may lose money, time and pride.

当然，你的初创企业可能最终是一次徒劳无功的尝试，因此你或许会损失金钱、时间和自尊。

Everything else is projected as a vain attempt to comprehend God by some self-serving means.

一切预测作为一个妄图理解上帝的一些自我服务的手段。

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。