你晚上骑车时应该穿浅色衣服，这样你更容易被看见。

You should wear something light-coloured when you're cycling at night so that you're more ___visible.

火从五公里外就能看见。

The fire was ___visible from five kilometres away.

这颗彗星应该肉眼可见。

The comet should be ___visible to the naked eye.