rat =calculate 计算 + ing [名词后缀],构成抽象名词 → n. 等级,评定结果,收视(听)率
🗣️ 情景例句
That's where our difficulty lies.
那就是困难所在。
Poverty is apain, but no disgrace.
贫困是痛苦,但不是耻辱。
It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.