Having sealants put on teeth before they decay will also save time and money in the long run by avoiding fillings, crowns, or caps used to fix decayed teeth.

在牙齿遭受侵蚀前就涂上保护胶，从长远看，能够通过避免填充、修补牙冠等修复受损牙齿的需要来节省时间和金钱。

youdao

Archers are no longer accurate shooters at long ranges — their art is much decayed.

弓箭手能在远距离精确射击的日子已经过去了——他们的技术下降得很快。

youdao

It is not as harmful as iodine-131, but can still damage DNA and cause cancers long after iodine-131 has decayed to insignificance.

铯- 137的危害不像碘- 131那么大，但也能破坏DNA并诱发癌症。而且能在碘- 131已经衰变减弱到无害之后很久依然有危害。

youdao

There was no reason to lower the rad limits on food, especially after the short-lived nuclides have long decayed away.

FORBES: Like We've Been Saying -- Radiation Is Not A Big Deal