instructive
adj
(approv 褒) giving much useful information 提供丰富知识的; 有益的
instructive books 有教育意义的书
The minister's visit to the prison was not instructive. 这个牧师这次探监没有什麽有益的贡献.
The killing of the bison changed the whole wildlife of the plains. With fewer bison, grass shoots were not eaten, so grass did not grow as strongly.
屠宰野牛改变了平原的全部野生生物。野牛少了,嫩草没有牛来吃了,草就长得不粗壮。
Today there are special kindergartens for Maori children, and the Maori language is now taught in more and more schools.
如今已有专门为毛利儿童而设的幼儿园,而且在越来越多的学校里讲授毛利语。
For his lifentime's work in studying the communication of animals, including honey bees, Professor Karl von Frisch was given a Nobel Prize in 1973, which he shared with two other scientists. He died in 1982.