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As we learn, graphs are good visual aids.

我们都知道，图表是一种很好的可视辅助工具。

Once you have the visual aids prepared you will almost know your talk by heart already.

一旦你有准备好了视觉教具基本上就已经知道你的报告了。

Diagrams and graphs are indispensable visual aids in many aspects of economics.

图形和图解在经济学的许多方面是重要的形象工具。

It would be necessary to use visual aids in your explanation.

至于这种图像和音乐多，产品的讲解少的广告方式，在日本行得通的原因是

It's very useful to have some visual aids - some slides, pictures or graphs that help explain what you are saying.

非常有用的，能帮助你更好的解释你说的话。

Comenius was the first person to point out the need for visual aids in teaching.

夸美纽斯是第一个提出教学中需要视觉教具帮助的人。

Using visual aids to help students create a good environment heard.

用直观教具，为学生创造良好的听说环境。

Some students learn more effectively with visual aids as they are better able to understand material presented visually.

有的学生学习更有效，因为他们与视听教材更能了解视觉材料。

Since the turn of the century, teachers have used various types of audio and visual aids to help them teach.

自从19世纪未20世纪初，教师拥有音频的不同的类型和视觉教具来帮助他们讲课。

This will help them to follow along, especially if you are not using visual aids. And keep in mind that this holds true regardless of the length of your speech.

这会有助于他们紧跟你的思路，特别是让你在没有使用其他视觉辅助工具的时候，仍然保持听众的注意力。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。