附终止期限的合同，自期限届满时失效。
A contract subject to a time of expiration is extinguished at such time .
保证合同是附混合条件与期限的合同，成立后并不立刻在当事人之间发生法律效力。
The guaranty contract has compound additional condition and term .
附期限的合同附期限的合同附期限的合同