Pacemakers
n. 领跑者( pacemaker的复数形式 ); 带头人; 标兵; 起搏器
🗣️ 情景例句
Row. Row.
Row。 Row。
There are seven of us altogether.
一共有7个。
is the slowest and has travelled round the earth through the surface rocks.
是最慢的，是围绕地球通过表面岩石传来的。