To improve the skill of the weak foot is an important part of football training .

改善、提高 弱 脚的运动技能是足球训练工作中的一个重要环节。

Muscovy duck ( Cairina moschata ) reovirus ( DRV ) is the causative agent of Muscovy duck Liver white spots disease a newly recognized Muscovy duck disease of economic importance characterized by apathy weak foot .

禽（番鸭）呼肠孤病毒（ Muscovyduck reovirus，DRV）是新近发现的番鸭肝白点病或花肝病的病原。

When the arrangement for the weak shoulder and slope for breakthrough slope of the slope foot slip surface must be in potential weak surface nearby .

当 弱面的布置方式为贯通坡肩和 坡脚时，边坡的潜在滑移面一定在弱面附近。