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- Human action understanding is generally dividedintothreefundamental subprocesses:feature extraction and motion representation,activity recognition and higher level activity and scene understanding. 行为理解问题一般遵从如下基本过程：特征提取与运动表征；行为识别；高层行为与场景理解。
- The complexity of various cost factors is reduced through application of Activity Based Costing(ABC) method. The benefits of low level activities, both tangible and intangible, are hierarchically aggregated into higher level activities. 为了降低各种成本因素的复杂性，该方法采用了ABC法（基于活动的成本核算法），将底层活动的效益，包括可计量的和不可计量的，都有层次地集结进较高层的活动中。
- I'd like a room on the upper level. 我想要楼上的房间。
- We need a mechanical digger to level the ground. 我们需要一台挖掘机来平整土地。
- I hope you'll be on the level with me. 我希望你对我坦率布公。
- She needs to win this point to level the score. 她要赢得这一分才能将比分扳平。
- Keep a level head and phone the Fire Department. 保持冷静，打电话给消防署。
- A football field should be level. 足球场地应该平坦。
- The rising level of crime is a sign of the times. 犯罪率增高是这一时代的特徵。
- I have told the whole story on the level. 我已经诚实地把整个事情经过讲出来了。
- Find level ground for the picnic table. 找一处平坦的地面放野餐的餐桌。
- This solute will be referred to as a tracer. 这种溶质称为示踪剂。
- This mountain is 1,400 meters above sea level. 这座山海拔1,400米。
- He has a level head in emergencies. 他在危急关头能镇定自若。
- If the table top isn't level, things will roll off. 如果桌面不平，东西就会滚下来。
- The level of inflation has gone beyond 8%. 通货膨胀率已经超过了8%。
- The tracer becomes increasingly dispersed. 示踪剂逐渐地扩散。
- The government's cultural departments at all levels actively organize and support cultural,sport and recreational activities of the disabled,enriching their life and guaranteeing their equal cultural rights. 各级政府文化部门积极组织、扶持残疾人文化、体育、娱乐活动，丰富残疾人的精神生活，保障残疾人享有平等的文化权利。
- Add one level (ie not heaped) tablespoon of sugar. 加一平餐匙糖。
- Deletes tracer token history information. 删除跟踪令牌历史记录信息。
