the navigation system will be a boon to both civilian and military users
同义词：
blessinggodsendbonusgood thingbenefithelpaidadvantagegainassetprivilegeluxurywindfallbonanzastroke of luckpiece of good fortuneformal：perquisiteinformal：perkplusplus pointproliterary：benison
2
a favor or request.
may I have the inestimable boon of a few minutes' conversation?
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boon的示例
the navigation system will be a boon to both civilian and military users
may I have the inestimable boon of a few minutes' conversation?
