Regular exercise helps you maintain good health.

• 保持

• 維修

If you are not physically active enough, you will have more 'health risks'.

• （火山）活的

• 忙於…的

Some lucky people are successful enough to earn a living through having a good number of viewers.

• 失敗的

• 成功的

The income might be unstable if your videos lack viewers.

• 不穩定的

• 穩定的

On average, we blink about 1200 times per hour.

• 眨（眼睛）

• （光）閃爍

It's important to keep our eyes healthy.

• 必不可少的

• 重要的

When the words on a book suddenly become blurred, we can try blinking our eyes.

• 模糊的

• 清晰的

In the blink of an eye, he was gone.

• 一眨眼，瞬間

• 突然

Blinking is a sign of high stress.

• 壓力

• 重讀