beneficial, advantageous, profitable

形容詞 beneficial:

1. promoting or enhancing well-being
   同義詞：good
2. tending to promote physical well-being; beneficial to health
   同義詞：good, salutary

1. Calcium is beneficial to our bones.
   鈣對(duì)我們的骨骼有益。
2. Affording advantage; beneficial.
   有利的提供優(yōu)勢(shì)的; 有益的
3. Capable of bringing about a beneficial result or effect.
   有益的可以帶來(lái)有利的結(jié)果或影響的
4. Fresh air is beneficial to our health.
   新鮮空氣有益于健康。
5. It's a beneficial result to us.
   對(duì)我們來(lái)說(shuō)那是有利的結(jié)果。

ben.e.fi.cial

adj.（形容詞）
Producing or promoting a favorable result; advantageous.
有利的：產(chǎn)生或促進(jìn)有利的結(jié)果的；有利的
Law Receiving or having the right to receive proceeds or other advantages.
【法律】 可享受利益的：得到或擁有收益權(quán)或其他有利條件的

來(lái)源：
Middle English
中古英語(yǔ)
from Old French beneficial
源自 古法語(yǔ) beneficial
from Late Latin benefici3lis
源自 后期拉丁語(yǔ) benefici3lis
from Latin beneficium [benefit] * see benefice
源自 拉丁語(yǔ) beneficium [利益，好處] *參見(jiàn) benefice

【引伸】
ben.efi.cially
adv.（副詞）
ben.efi.cialness
n.（名詞）
<參考詞匯><同義詞>beneficial,profitable,advantageousThese adjectives apply to what promotes benefit or gain.
這些形容詞適用于促進(jìn)利益或收益的事物。
Beneficial is said of what enhances well-being:
Beneficial 意為增進(jìn)健康：
例句：
a temperate climate beneficial to the health;
有利于健康的溫和氣候；

例句：
an arms limitation agreement beneficial to all countries.
對(duì)所有國(guó)家都有利的武器限制協(xié)議。

Profitable refers to what yields material gain or useful compensation:
Profitable 意指獲得物質(zhì)收益或有用的補(bǔ)償：
例句：
profitable speculation on the stock market;
在股票市場(chǎng)上的有利可圖的投機(jī)；

例句：
a profitable meeting to resolve difficulties. Something
有利于解決困難的會(huì)議。

advantageous affords improvement in relative position or in chances of success:
advantageous 指在相對(duì)的位置上或成功的機(jī)會(huì)方面給予改善：
例句：
signed a contract that is advantageous to our company;
簽訂一項(xiàng)對(duì)我們公司有利的合同；

例句：
found it socially advantageous to entertain often and well.
發(fā)現(xiàn)經(jīng)常令人滿意地款待他人可在社會(huì)上收到很有利的效果