a poor circumstance的意思|示意

The frost heave in a road is easily induced due to low standard design, poor geographical circumstance and effect of daily travel loads.

由于设计标准低，加上恶劣的地理环境及大行车荷载作用，道路极易产生翻浆。

Forging and pressing equipment work in a poor circumstance. Locating in big librations, high temperature and much dust circumstance.

锻压设备的工作环境一般都很恶劣，长期的处于振动大、温度高、灰尘多的工作环境中。

As basic rights can not be fully guaranteed, the group has in a difficult circumstance. With a huge number, the group has show a poor economy, low quality of life and poor-risk features.

该群体基本权利不能得到充分保障，处境艰难，数量庞大，呈现出经济贫困、生活质量低下、抗风险性差的特点。