In calculating the daily calorie requirements for an individual, variations in body size, physical activity, and age should be taken into account.

The fear of smallpox, which terrorized the eighteenth century, has no analogy(likeness) today.

Thefearofsmallpox,whichterrorizedtheeighteenthcentury,hasnoanalogy(likeness)today.

ThefuturesurvivalofthebaldeagleisstillanimportantAmericanecologicalconcern.

InthenortheasternUnitedStates,itrainsintermittently间歇地throughoutthespring.