•Twice a week the children are tested in basic mathematical skills such as addition (= calculating the total of different numbers put together) and subtraction.孩子每周要参加两次加减法等基础数学能力的测试。

•In addition to his flat in London, he has a villa in Italy and a castle in Scotland.除了在伦敦拥有一层公寓外，他在义大利还有一座乡间别墅，在苏格兰有一座城堡。

•A secretary would be a welcome/useful addition to our staff.多聘一名秘书对于我们全体工作人员来说是好消息／会有助于我们全体工作人员的工作。

•Most working environments are improved by the addition of (= adding) a few plants and pictures.多数情况下，只要摆上几盆花、几幅画，工作环境就能得到改善。