It is not a simple competition for a fixed amount of food determined by the physical environment,
它已不是为了争得物质环境所决定的有限食物而进行的简单竞争了，
新概念英语第四册 Lesson 45 Of men and galaxies

📚 句中词汇解析

从本句中提取的重要词汇

simple ['sɪmpl] 词频1
adj. 简单的;单纯的;易受骗的;天真的; n. 笨蛋;愚蠢的行为;出身低微者;
💡 sim(one by one)+ple(fold)→简单的；朴素的；单纯的
"her austere bedroom with its simple narrow bed"
她那仅有一张窄床的简陋卧室
近义：uncomplicated, basic, cushy, doss, easy, facile 反义：arduous, intricate, labored, laborious, onerous, painful
competition [,kɑmpə'tɪʃən] 词频2 词根: com
n. 竞争;比赛;竞争者;[生]生存竞争;
💡 compet=compete竞争+ition名词后缀 →比赛，竞争
"He was astonished to learn he'd won the competition."
他听说他比赛赢了，感到很惊讶。
近义：joust, match, meet, race, rivalry, tournament 反义：help, assist, assistance, relief, succor, succour
fixed [fɪkst] 词频1
adj. 固定的，不变的;不易挥发的;处境…的，常作复合词;（比赛等）通过作弊预先安排好结果的; v. 固定( fix的过去式和过去分词);
💡 fix固定+ed被...的 →被固定的
"the expiry of a fixed-term contract"
定期合同的满期
近义：irremovable, nailed, pinned, secured, set, standing 反义：astable, astatic, precarious, unsettled, unsteady, wobbly
amount [ə'maʊnt] 词频2 词根: a
n. 量，数量;总额;本利之和;全部效果，全部含义; vi. （在意义、价值、效果、程度等方面）等于;等同，接近;合计，总共;发展成为;
💡 mount =ascend,表示”上升, 山”#词根助记：a朝向+mount=朝向……提升直到总量=总量
"The insurance company will refund any amount due to you."
保险公司将退还你应得的所有款项。
近义：import, matter, signify, count, number, quantity
physical ['fɪzɪkl] 词频2 词根: physics
adj. 自然（界）的;身体的;物质的;自然规律的; n. 身体检查，体格检查;
💡 phys生理领域 + ical ...的 → a.物质的；物理的；身体的
"the cult of physical fitness"
健身热
近义：material, personal, substantial, bodily, concrete, corporal 反义：unworldly

📚 更多「新概念英语第四册」例句

and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。
Two factors weigh heavily against the effectiveness of scientific research in industry.
两个因素严重地影响工业里科学研究的效果：
In fact, it would be an assistance to all carnivores though it would be a two-edged weapon when they fought each other.
因此，任何食肉动物有了毒液，都能从中获益。
He must, for example, perceive an egg as a simple single solid shape,
以鸟蛋为例，观赏者必须感觉到它是一个单一的实体形态，
Arthur C.Clark once suggested a revolutionary idea passes through three phases:
Arthur C.Clark曾经提出，一个革命性的想法经过三个阶段：
below 20 per cent, its bactericidal action is negligible.
浓度低于20％时，杀菌能力基本上就不存在了。