He went to see the doctor at the onset of a cold.

他开始感冒时便去看医生了。

Social distancing measures at the onset of the covid-19 pandemic boosted mailing voting.

疫情初期采取的社交疏远措施推动了邮寄投票。

I suppose you think I'm a drunk or trembling with fear at the onset of old age.

你以为我是个醉鬼或是因为害怕年老而发抖吧。

The cherry on top is a mild drought at the onset of Fall, after having a great growing season.

在经历了一个伟大的生长季节之后，锦上添花的是秋天来临时的轻度干旱。

But right at the onset of this climate change event, the rivers change dramatically.

但就在这次气候变化事件开始时，河流发生了巨大变化。

We get the most pimples when we're teens due to the increased amount of androgen hormones like testosterone in our bodies at the onset of puberty.

我们在青少年期间长最多痘痘，因为青春期开始时体内像是睪酮之类的雄性激素数量增加。

This is because the value of membrane potential at the onset of an action potential DETERMINES the number of voltage-gated sodium channels activated during depolarization.

这是因为，动作电位开始时的膜电位值决定了去极化过程中激活的电压门控钠通道的数量。