海岸警卫队其他的唯一极地破冰船——“希利”——仍然在运作，并于本月初开始了其在北极的夏季巡逻。
The Coast Guard's only other polar icebreaker - the smaller research icebreaker Healy - remains operational and started its Arctic summer patrol earlier this month.
海岸警卫队其他的唯一极地破冰船——“希利”——仍然在运作，并于本月初开始了其在北极的夏季巡逻。
The Coast Guard's only other polar icebreaker - the smaller research icebreaker Healy - remains operational and started its Arctic summer patrol earlier this month.
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