Translation of "Thus" in Chinese

Am I correct in thinking thus?

我這樣想是對的嗎？

Thus I tell you don't just go alone.

因此我跟你說，你不要一個人去。

When it sets off the bell rings, "ding-ding". Thus 'ding-ding-train'.

出发时会响着“当当“的铃声，所以才叫做“当当”电车。

- That's why I told you that you shouldn't go alone.
- Thus I tell you don't just go alone.

因此我跟你說，你不要一個人去。

The more cheese, the more holes. The more holes, the less cheese. Thus: The more cheese, the less cheese.

越多奶酪越多洞。洞越多則奶酪越少。因此: 奶酪越多就越少奶酪。

We'll be going outside to observe nature for this. Thus, a good pencil, eraser, and possibly a paint brush are required.

我们将要到室外去观察大自然。因此，一支好的笔，橡皮和大概一支画笔是必需的。

The lesson of history is always that things have been otherwise in different times and places and thus could now be otherwise as well.

历史课总是根据时间和地点的差异在不同情况下显示出不同的结论，即便是现在发生的也可能是相反的。