If means when, provided that, or on condition that.

如果意味着什么时候， 假设或条件。

'Here's sixpence for you, on condition that you don't again come within twenty yards of my heels, all the way up the valley'.

“这是给你六便士，条件是你不要再走到跟二十码以内，一直到山谷”。

Her real name was Estelle, but Aunt March ordered her to change it, and she obeyed, on condition that she was never asked to change her religion.

她本来名字是埃丝特尔，而马奇叔婆吩咐她个名字，她服从了，但有个条件：永远也不得要求她变宗教信仰。

His property was divided into three parts and I was to have one on condition that I found two Garridebs who would share the remainder.

他财产分为三部分， 要有一份有条件找到了两个加里德布， 他会分享剩下。

With their help, she received a " divorce" for her child, but only on condition that she repay the $1,000 that her husband received from the groom's family.

在他助下，她为她孩子争取到了" 离婚" ，但条件是她必须偿还她丈夫从新郎家里得到1000美元。

After all, he thought, one need not be surprised to find the rare conjunctions of nature under circumstances apparently unfavorable: come where they may, they always depend on conditions that are not obvious.

毕竟，他认为，在明显不利情况下发现罕见自然结合并不奇怪：无论出现在哪里， 它总是取决于不明显条件。

This was finally effected by the Hay-Pauncefote treaty of 1901 authorizing the United States to proceed alone, on condition that there should be no discriminations against other nations in the matter of rates and charges.

这最终由 1901 年 Hay-Pauncefote 条约实现， 该条约授权美国单独进行，条件是在费率和收费方面不得歧视其他国家。

He proposed pardon and a restoration of property, except in slaves, to nearly all who had " directly or by implication participated in the existing rebellion, " on condition that they take an oath of loyalty to the union.

他提议赦免和恢复财产，除了奴隶，几乎所有“直接或暗示参与了现有叛乱” 人，条件是他宣誓效忠工会。