一块板是它们可以独自拉近，在另一块板上，由松散的绳子穿过板上的环结。

One board they could pull close solo. On another board, loose rope threaded between loops.

youdao

一块板是它们可以独自拉近，在另一块板上，由松散的绳子穿过板上的环结。

One board they could pull close solo. On another board, loose rope threaded between loops.

youdao