含有seven和seventh的成语
(1) at seven-league 大踏步地
China is developing at seven league strides.
中国正在大踏步地向前发展。
(2) in one's seventh heaven 在无限幸福中
The children were in their seventh heaven，playing with water on the beach.
孩子们在海滩上玩水，极为幸福。
含有eight的成语
chasing eight and quarters 追逐名利
The boss in the company is a miser，chasing eight and quarters.
这公司的老板是个追求名利的吝啬鬼。
