Michael Shifter heads the Inter-American Dialogue in Washington. He said the invitation of Cuba is a significant gesture.

迈克尔·谢夫特是华盛顿美洲国家对话组织负责人，他说邀请古巴参加是个颇具深意的举动。

When they issued from beneath its concealment, they found the scout awaiting their appearance nigh by, and the only salutation between them was the significant gesture for silence, made by their sagacious leader.

当他们从隐蔽处出来时，他们发现侦察员就在附近等着他们的出现，他们之间唯一的敬礼就是他们明智的领导者做出的重要的沉默手势。