noun [专属名词] 三十年代
He was struck down by cancer at the age of thirty. 他在 30 岁时被癌症夺去了生命。
numeral [基数词] 三十
By sunset we had covered thirty miles. 到日落时我们已走了三十英里。
adjective [原级] 三十个的
Some thirty people attended the funeral. 大约有三十人参加了葬礼。
He was struck down by cancer at the age of thirty. 他在 30 岁时被癌症夺去了生命。
By sunset we had covered thirty miles. 到日落时我们已走了三十英里。
Some thirty people attended the funeral. 大约有三十人参加了葬礼。
