optimism
n[U]
tendency to expect the best in all things; confidence in success; belief that good will triumph over evil in the end 乐观; 乐观主义
He was still full of optimism for the future despite his many problems. 他尽管有许多问题, 但对未来仍十分乐观.
There was a feeling of optimism in the country when the new government was elected. 经选举产生新政府, 举国上下对前景十分乐观. Cf 参看 pessimism.
Yes, and we must stop people walking on this floor until it's firm. It may be necessary to put up a notice saying Keep off. Another thing, we' ll have to drill a hole in the wall for the electric wires.