Translation of "Solely" in Chinese

Victory and defeat aren't solely decided by the size of your army.

胜败不能单靠兵力多少。

Tom wanted to be able to read the original Quran and solely for that reason he started learning Arabic.

汤姆是为了能够看懂古兰经的原文才去开始学习阿拉伯语的。

The Party seeks power entirely for its own sake. We are not interested in the good of others; we are interested solely in power.

党为自己的利益追求势力。我们对别人不体贴；我们只追求势力。