艰巨jiān jù
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
根据规则,用汉语拼音拼写普通话,必须以词为书写单位,例如“鸭绿江”拼写为“Yālù Jiāng”。
免费的网站请分享给朋友吧