Concrete with river gravel or quartzite aggregate is of medium difficulty to cut.

溪砂石骨料混凝土或石英岩身材中等难度降低。

youdao

The obvious difficulty is that trying to illustrate animations and dynamic effects by definition is not easy on a static medium.

显见的难点是作者不容易在静态媒体上图解动画和动态效果。

youdao

Difficulty: easy; Time required: 30 minutes; Customisation: medium.

难度程度：简单；时间：30分钟；自定义程度：中。

youdao

However, within the last three years, due to the fluctuations and uncertainty in the capital markets and tighter restrictions to capital, small and medium- sized family -owned businesses have had more difficulty obtaining access to outside capital.

FORBES: Identifying a Successor for Your Family-Owned Business

As Jim notes, the difficulty in conveying powerful emotional stories in video games is largely because the medium is new, interactive, and often focused on action, adventure, and other player challenges.

FORBES: We Don't Need Photorealism To Convey Human Emotion In Video Games