Riccitensor
缩并的曲率张量
🗣️ 情景例句
Australia is a unique country.
澳大利亚是世上独一无二的国家。
Who is the greatest novelist of our times?
谁是当代最伟大的小说家？
He did not marry again and I was brought up without a woman's care;
父亲没有再娶，因此，我在没有母亲的环境里长大成人。