It's the world's largest island, but it's also the world's smallest continent.
它是世界上最大的島嶼,同時也是世界上最小的洲。
The mother's heart is the child's schoolroom.
母親的心腸是孩子的課堂。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.