ring spanner()
Each fire hydrant must have at least one spanner and at least one().
A spanner is a().
A spanner is a ().
A spanner is a().
什么是统计图表中的Caption,Legend,Column Spanner以及ReproductionNote?
-May I use your spanner? -Certainly. Here ().
Excuse me, may I ()your spanner?
box spanner()
adjustable(shifting)spanner()