a. 无条件的, 无限制的, 绝对的【经】 无条件的, 无保留的

◆记忆方法一：
词根词缀记忆法：unconditional无条件的(un+conditional有条件的）,“un-”表示“不，无，非，没有”

if/unless/condition/conditional/unconditional/on/condition/that
记忆：
1. if [ if ] conj. (表条件)如果, 是否 If he comes, ask him if he will go there alone.如果他来的话，问他是否原意一个人去。
2. unless [ En5les, Qn5les ] conj. 如果不, 除非 He never speaks unless spoken to.如果没有人跟他说话，他不会开口的。
3. condition [ kEn5diFEn ] n. 条件, 情形 The air condition of Chengdu is better than before.成都的空气比以前好多了。
4. conditional adj. 有条件的, 引起条件反应的 They reached a conditional agreement. 他们达成了有条件的一致。
5. unconditional [ 5QnkEn5diFEnEl ] adj. 无条件的, 绝对的, 无限制的 The war ended with Japanese unconditional surrender. 战争以日本无条件投降而告终。
6. on condition that conj. 如果 He will lend me the money on condition that I repay him within a week.他会借钱给我，条件是我一周内归还。
另类阅读：
We will win on condition that we never give in. We will fight on unless the Japanese surrenders unconditionally. The conditions about the island are worse and worse. We will lose it if we allow the Japanese to exploit it.