To ask to be released from something, such as an obligation
借故推辭，謝絕：要求從某件事，如一項(xiàng)義務(wù)解脫出來
We were invited to stay for dinner, but we had to beg off.
我們被邀請(qǐng)留下來吃晚飯，但我們不得不謝絕了
(archaic)live by begging
(古)以乞討為生
(of a fact or action) raise a question or point that has not been dealt with; invite an obvious question
（事實(shí)或行動(dòng)）引發(fā)（人們考慮）尚未觸及的問題；引出多數(shù)人都能想得到的問題
assume the truth of an argument or proposition to be proved, without arguing it
未經(jīng)討論就認(rèn)為某一有待證明的論點(diǎn)或主張正確；把尚無定論（或有待證明）的事當(dāng)作事實(shí)來看待；想當(dāng)然，主觀臆斷，武斷
(Austral./NZ)I beg your pardon
(澳/新西蘭)對(duì)不起；請(qǐng)?jiān)?/p>
(of an article) be available for use because unwanted by others
（物品因別人不需要）隨時(shí)可用