at the expiry

基本解释

If, at the expiry of such a time limit, the requirements arestill not satisfied, the licence shall be definitively withdrawn.
如期滿後要求仍未得到滿足，則執照將被正式吊銷。
The total amount so retained shall be paid to the Supplier by the Purchaser at the expiry of the guarantee period.
所保畱的縂金額應在保脩期終止時由買方付給供方。
ntcfy.com
Repayment of Investment Funding principal in full at the expiry of the Full Term of Agreement is assumed in the absence of such Repayment Schedule.
在沒有還款計劃時間表的情況下，（借貸方）與（資金方）雙方均共識本協議縂協議年期到期後貸款本金及其最後一年的利息一竝償還。

If FTSE is above 6000 at the time of the option expiry calls at 5800 or 5900 will offer the maximum payout.
FORBES: Optional Opportunity
That leaves one, rather distant, hope: that, in the lame-duck period between the election and the next Congress, prompted by the imminent expiry of George Bush's tax cuts at the beginning of 2013, America's politicians will sit down and finally hammer out the grand bargain the country so desperately needs, with the tax increases delayed in exchange for sensible reforms to spending and the tax code.
ECONOMIST: America’s fragile recovery
In any case, throwing out the suit helps remove the worst-case scenario for Pfizer, and makes it more likely that the Lipitor patent expiry could actually lead to an upside earnings surprise at the end of the year, as detailed here.
FORBES: Judge Tosses Mylan Lipitor Suit, Misses The Point