be in activity造句

• The volcano is in activity
  这火山正活跃著。
• Be in activity
  在活动中
• Foreign currency risk is to show an economy substance or individual are in activity of economy of concerning foreign affairs or foreign nationals , because of foreign currency exchange rate fluctuant , make its produce inaccuracy to be changed surely with the asset of foreign currency valuation or indebted value , make thereby the possibility of possessory incur pecuniary loss
  外汇风险是指一个经济实体或个人在涉外经济活动中，因外汇汇率的变动，使其以外币计价的资产或负债价值发生不确定改变，从而使所有者蒙受经济损失的可能性。