quote from a dictionary

default: [ di'fɔ:lt ]

n. 假設值,默認(值),不履行責任,缺席
v. 默認,不履行義務,缺席,拖欠
[計算機] 缺省

例句與用法:
1. I default on the installment payment.
我沒有付分期應付的款。
2. The team lost a game by default.
那個隊因沒有出席而輸掉比賽。
3. The committee will not meet in default of a chairman.
沒有主席委員會就不開會。
4. He was acquitted in default of strong evidence of his guilt.
因無確鑿證據而判他無罪.
5. A party to the contract defaulted.
訂契約的一方未到場.
6. In the default of one player we have to take the little boy as our team member.
因為缺乏一名運動員我們隻好叫這個小男孩做我們的隊員。

英英解釋:
名詞default:

1. loss due to not showing up

2. act of failing to meet a financial obligation
同義詞：nonpayment, nonremittal

3. loss resulting from failure of a debt to be paid
同義詞：nonpayment, nonremittal

4. an option that is selected automatically unless an alternative is specified
同義詞：default option

動詞default:

1. fail to pay up
同義詞：default on