由于 yóuyú 讲 jiǎng 道 dào 太 tài 久 jiǔ ,他 tā 感觉 gǎnjué 非常 fēicháng 疲劳 píláo .

He felt very tired, for he preached for a long time.

忽视 hūshì 疲劳感会 huì 打乱我们 wǒmen 的 de 生物钟 shēng wù zhōng 。

Ignoring feelings of tiredness knocks our body clocks out of kilter.

如果 rúguǒ 不得不 bùdébù 疲劳 píláo 驾驶 jiàshǐ ，那 Nā 就 jiù 开得比 Bǐ 平时 píngshí 慢 màn 一点 yī diǎn 。

If you have to drive when you are tired, go a little more slowly than you would normally.