【重點(diǎn)詞匯】

1.Smell, or olfaction, as scientists call it, is an important sense for many fish.
聞，或則科學(xué)家們所說的嗅覺，是魚類的一種重要感官。

olfaction n. 嗅覺

2.Some fish can pick up chemical signals when immobile by pumping water through their olfactory system via tiny hairs called cilia.
當(dāng)魚類停止游動的時(shí)候，它們可以通過用自己的纖毛排水，來感覺身邊的化學(xué)信號。

immobile adj. 不動的，不變的，靜止的

如：The deer stood immobile among the trees.
那只鹿一動不動地站在樹叢里。

Her illness has made her completely immobile.
她病得完全失去了活動能力。

3.For instance, a large group of fishes release a chemical when they’re wounded that incites other fish to flee.
例如，如果一群魚受到攻擊，它們就會釋放出一種化學(xué)物質(zhì)，好讓其它的魚趕緊逃命。

incite v. 煽動，刺激，激勵

如：Just a few words will incite him into action.
他只需幾句話一將，就會干。

The captain was accused of inciting other officers to mutiny.
該上尉被控煽動軍官叛變。