In such a case, studying by oneself is crucial to improve your learning efficiency.

在这种情况下, 自对于提高你效率至关重要。

And now for " by oneself." " By" is a preposition.

现在讲by oneself。by是介词。

One could carry this television by oneself.

这台电视可以自己搬。

One doesn't do it by oneself.

一个不能独自做这件事。

America is a nation known for the idea of making things by oneself.

5. 美国是一个以自己制造东西理念而闻名国家。

It is lonely living by oneself.

一个住很孤独。

In a noisy and crowded world, they argue, people should make time to be by oneself, away from attention-grabbing stimuli.

他认为，在一个嘈杂拥挤世界里，该抽出时间独处，远离吸引注意力刺激。

" Alone" , instead of saying " alone" , you could say: " by oneself" , " on one's own" , " by themselves" .

“独自”，替代这个词，你可以说：“一个”，“自己”，“他自己”。

To discard the hard-won information on how to live accumulated by our ancestors, or to expect to discover a viable set of goals all by oneself, is misguided hubris.

抛弃祖先积累关于如何生活来之不易知识，或者期望独自发现一套可行目标，是错误傲慢。