最简单的加载情况是周期地、均匀而重复地施加的载荷.The simplest imposed conditions are those in which the loading is periodically and uniformly repeated.那就是为什么他必须不断重复地确定他对艺术的热爱.That's why he constantly had to reaffirm his love for art.重复地细茵性...
a grey, cloudy day灰暗多云的天空Only a tiny patch of blue was visible in the cloudy sky.多云的天空中只见到一小块儿湛蓝.Bob always enjoys sailing, even though the weather is cloudy.鲍勃总是很喜欢航行, 即使空中乌云密布....