a. 乐观的, 乐观主义的, 乐天的
I) What Keynes predicted was a very optimistic version of what economists call technological unemployment.
四级 · CET-4 2024年6月 第1套
"The people at Monsanto who I've talked to are much more optimistic that they'll be able to engineer heat-tolerant crops," Schlenker says.
四级 · CET-4 2023年12月 第1套
Currently, the enzyme takes a few days to start breaking down the plastic, far faster than the centuries it takes in the oceans, but the researchers are optimistic this can be speeded up even further and become a viable large-scale process.
六级 · CET-6 2022年12月 第3套
For example, previous studies have found that more optimistic people have a lower risk of developing chronic diseases, and a lower risk of death.
六级 · CET-6 2021年12月 第1套
A)They are optimistic about its potential.
六级 · CET-6 2018年12月 第2套