be covered in 是用……填满，表动作
be covered with 是被……覆盖
【造句】：
【be covered in 】
Arrays will be covered in detail in later chapters
数组问题将在以后的章节里详细讨论
He be covered in bruise after falling off his bicycle
他从自行车上 下来, 满身青一块、 紫一块
The insurance has to be covered in the Contract Currency showing claims payable in China and with no deductible clause.
按合同金额投保,并表明可在中国索赔,且不得含有免赔条款。
The 1.9-mile loop must be covered in precisely 13 minutes, with one line of students chanting sho-do ("selling") and the other responding tan-kyu ("pursuit" ).
一圈下来是1.9英里，学生必须精确地用13分钟完成。 一队学生口颂着"销售"，另一队回应着"追求"。
When all questions cannot be covered in one report, write two.
一次不能写完全部问题时，分两次写。
【be covered with】
He is said to have ordered piles and other bridge timbers to be covered with olive oil as a precaution against decay.
他曾下令要将所有的桩木和桥梁都用橄榄油涂刷以预防腐朽。
By 2005, 40% of the city's urban area will be covered with green land, and by 2007, this figure will go over 43%.
到2005年，市区城市绿化覆盖率达到40%以上，2007年达到43%以上。
4. To be covered with dust all over the face; to lose face 灰头土脸
be covered with rust
生满了锈
Be covered with chocolate sprinkles
上面撒了一层巧克力碎屑
That way, mismatches can be covered with adequate working capital.
如此一来，收支不符的情况便能用适当的周转资金予以填补。
be covered in 和be covered with的意思不同，用法不同，连接成分也不同。
be covered in 的意思是：“用……填满,表动作”，
常用短语：be covered in mist 笼罩在薄雾中；
might not be covered in 可能不在
to be covered in dust 尘封
句子中的举例：All of these features will be covered in Part 2.
所有这些特性都将在第2部分中介绍。
3. be covered with的意思：被……覆盖；被……盖满；充满着……
常用短语：Be All Covered With Snow 满身是雪；
Be Speedily Covered With Fire 一片火海；
句子中的举例：
After a heavy snowy day, the forest is covered with thick white snowflakes.
一天的大雪之后，森林里覆盖了厚厚的白色雪花。