busy in短语²⁴³⁷¹ 基本例句 adj.忙于 Over the past few weeks Vladimir Putin has been busy in many heroic roles. 在过去的几周间,普京一直忙于充当各种英雄角色。 yeeyan The Americans, busy in Afghanistan, balked at the idea of opening another front in Pakistan. 正在忙于阿富汗的美国人,并不希望在巴基斯坦开拓另一个战线。 ecocn