When the attractant or stimulant concentration exceeds the receptor limits, the offering is seen as food.是什么意思？

When the attractant or stimulant concentration exceeds the receptor limits, the offering is seen as food.

當誘食劑或刺激物濃度超過受體的閥值時, 供應物就被看作食物.

when

adv. 什么時候，（用于時間的表達方式之后）在那時，其時，當時；conj. 在…時，既然，如果；pron. 什么時候，那時；n. 時間，時候，日期，場合；

例句
It was a Christmas when shoppers passed by expensive silks in favor of more practical gifts.
這是一個購物者不理會昂貴的絲綢衣服而熱衷于更實用禮物的圣誕節。

the

art. 指已提到的人（物），指說話人與聽者已知的人（物），用于獨一無二的事物前，與形容詞最高級和序數詞連用；

例句
He did have a real knowledge of the country...
他對該國的確知之甚多。

attractant

n. （對昆蟲等動物具有誘惑力的）引誘劑，引誘物；

例句
When the attractant or stimulant concentration exceeds the receptor limits, the offering is seen as food.
當誘食劑或刺激物濃度超過受體的閥值時, 供應物就被看作食物.

or

conj. 或，或者，還是，不然，否則，左右；prep. <古、詩>在…之前，比…更早；n. [紋章]黑金色、黑色；

例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我們不敢放縱自己的情感，以免顯得太過軟弱或缺乏自制。

stimulant

n. [藥]興奮劑，刺激物，酒精飲料；adj. 刺激的，激勵的，使人興奮的；

例句
When the attractant or stimulant concentration exceeds the receptor limits, the offering is seen as food.
當誘食劑或刺激物濃度超過受體的閥值時, 供應物就被看作食物.

concentration

n. 集中，專心，關注，濃度；

例句
We lacked concentration and it cost us the goal and the game.
我們注意力不夠集中，結果丟了球，輸了比賽。

exceeds

v. 超過( exceed的第三人稱單數 )，超越，（在數量和質量等方面）勝過，越過…的界限；

例句
The air pollution exceeds most acceptable levels by 10 times or more.
大氣污染程度超出了普遍認可的標準10倍或更多。

receptor

n. [生]感受器，受體，[電]感受器，接收器，[化]接受器，感覺器官；

例句
These may bind to receptor molecules on the surfaces of cells...
這些可能會在細胞表面和受體分子結合在一起。

limits

n. 境界( limit的名詞復數 )，界限，限度，限額；

例句
...the limits of the human auditory range.
人耳聽覺范圍的限度

offering

n. 提議，課程，貢品，祭品，奉獻物；v. 提供(offer的ing形式)；

例句
...his insistence on offering gratuitous advice.
他堅持要提供一些無謂的建議

is

vt.& vi. 是（be的三單形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香檳是一種名貴的備受推崇的葡萄酒。

seen

v. 看見( see的過去分詞 )，觀看，領會，考慮；

例句
Holiday spots have seen a dramatic revival and tourist chiefs are competing for a slice of the action.
各個度假點重又呈現出一派興旺景象，旅游業的龍頭老大們都在爭著分一杯羹。

as

adv. 同樣地，一樣地，例如；prep. 作為，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我記得帕蒂是姓史密斯的。

food

n. 食物，食品，糧食，養料，資料；

例句
English food can be wonderful but the normal English diet is abominable.
英國也有美食，只是一般的日常飲食太過糟糕。

...the spiralling vortex airflow that slows the plane.
使飛機減速的螺旋形氣流渦旋

You just go on ahead. I'll come by later...
你只管先往前走。我隨后就來。

He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打兒子的,是恨惡他;疼愛兒子的, 趁早管教.

For further information, please contact 414 3925, extension 2253.
詳情請致電414 3925,轉分機2253。

He sat there while I made the case for his dismissal...
他坐在那兒，聽我陳述解雇他的理由。

Baroness Thatcher's claims seem credible to many.
撒切爾女男爵的主張在很多人看來是可信的。

Nothing to be got without pains but poverty.
一份耕耘，一份收獲。

This decree obliges unions to delay strikes.
該法令迫使工會推遲罷工。

The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索權當有支付義務的第一方不能支付時，可以向商業票據的背書人要求支付的權力。

The new uniforms will arrive tomorrow.
新制服明天就到。

If you don't take milk, cheese or yoghurt, other sources of calcium are important.
你要是不喝鮮奶和酸奶，也不吃乳酪，那么其他的補鈣來源就很重要了。

I'm scared of the dark. I'm a big chicken.
我怕黑，是個十足的膽小鬼。

Microsystem or micro electromechanical system ( MEMS ) is briefly introduced.
本文簡要介紹微系統的涵義、發展和主要特點.

Hello, is this the Auto Repair shop?
你好, 這里是汽車修理廠嗎 ?

The postmaster was a very polite old man.
這位郵政局長是個非常有禮貌的老人.

This setup consists of a butterfly valve and a rotary electromechanical actuator.
這套裝置由蝶閥和旋轉電動驅動器組成.

Scientists often cannot date precisely archeological or prehistorical findings.
科學家們常常不能精確地鑒定考古或史前期發現的日期.

Carrie became wise in theatrical lore, hearing the gossip of little Lola.
聽著小蘿拉的閑言碎語,嘉莉開始了解戲劇界的情況了.