This returns the number of columns in the row metadata instance ,返回行元數(shù)據(jù)實例中的列的數(shù)目。
Affected vehicles will continue to be temporarily diverted via kweilin street northbound , un chau street westbound and yen chow street southbound onto fuk wing street 受影響的車輛須繼續(xù)改經(jīng)桂林街北行元州街西行及欽州街南行至福榮街。