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ains its own characteristic cycle duration with great precision for many days。 動物通常會將極其精準的具有自身特性的迴圈時間維持許多天。

dwelling['dweli?]n。 住處

例句 For people in cliff dwellings; hauling water; wood and food to their homes was hard work。 對於住在懸崖上的人們來說,把水、木材和食物運到家中是一項艱難的工作。

efficient[i'fi?nt]a。 有效的,有效率的;能勝任的

搭配 energy efficient 節能的

例句 1。 This friction tends to slow the speed of winds and make them far less efficient at dispersing on airflow。 摩擦力將會降低風速並使分散風流的效率降低。

2。 The camel's abilities to thrive in harsh desert conditions and to carry large loads cheaply made it an effective and efficient means of transportation。 駱駝能在惡劣的沙漠環境中健壯成長,而且能馱沉重的貨物,這使它成為了廉價而高效的沙漠運輸工具。

3。 The engine eliminated water in the mines by driving efficient pumps; so that it is possible to make deeper and deeper mining。 機車透過操縱高效的泵來排走礦井中的水,從而使採到越來越深的礦產成為可能。

要點 efficient的名詞形式是efficiency,主要是指辦事的“效率”,“效率高”可以說high efficiency。

同義 effective(a。 有效的)

派生 efficiently(ad。 有效地)

elite[ei'li:t]n。 精英;掌權者;社會名流;實力集團 a。 卓越的;精銳的

例句 1。 Many of the statues are made to be put in the tombs of the elite in order to serve the tomb owners in the afterlife。 許多雕像是要被放進掌權者的墳墓中的,為了在來世侍奉墳墓主人。

2。 The growing power of the elite; who controlled the economy; would not serve as additions to the labor force。 掌控經濟的實力集團的權力日益強大,不再是勞動力的附屬物。

3。 If you want to understand ancient Egyptian art; it is important to know as much as possible of the elite Egyptians' view of the