例句：She is an active participant in this activity.
      她积极参与这项活动。

2.board n.船只，甲板

例句：The Titanic sank with all the crew on board.
      泰坦尼克号连同它上面的船员一起沉没了。
 
3.refuel vt.vi.(给)加油,(给)加燃料

例句：The plane was refuelled and declared ready for service again.
      飞机加油后报告可以重新起飞了。

4.schedule vt.预定,编制目录,制…表,安排

例句：The secretary is trying to schedule the month's appointments.
      秘书正在设法安排这个月的约会。

5.impact vt.vi.对某事物有影响

例句：These costs will impact on our profitability.
      这些费用会影响到我们的利润。
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