Undulates
v. 波動, 起伏, 呈波浪形( undulate的第三人稱單數 ); 使波動, 使起伏, 使成波浪形
??? 情景例句
That's just what I was thinking.
我正是那么想的。
The roofer is patching the roof with metal.
屋面防水工在用鐵皮修補屋頂。
They had just had enough time to swim out of danger when the boat again completed a circle.
他們剛剛來得及游出危險區，快艇就又轉完了一圈。