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 The Origins Of Cetaceans   單字與片語分析(1-1)

1. obvious (Adj.)：easy to see, recognize, or understand.

例句 1 ：Determining how the Democratic challenger would conduct his presidency isn't quite so obvious. 

例句 2 ：There are some very obvious phrases that we all know or certainly should know better than to use.

2. cetacean (N.)：any of various types of mammal, such as the whale, that live in the sea like fish. (鯨目動物)

例句 1 ： Japan's Institute of Cetacean Research announced that it had stopped work temporarily because it was too difficult to refuel.

例句 2 ：I am not aware of any cetacean that has but perhaps you could surprise me.

3. whalea (N.)：very large sea mammalthat breathes air through a hole at the top of its head. (鯨)

例句 1 ： The blue whale is the largest living thing on the planet. 

例句 2 ： I had a whale of a time in Birmingham. 

4. porpoise：鼠海豚

5. dolphin：海豚

6. mammal：哺乳動物

7. streamline (V.)：

A. to shape something so that it can move as effectively and quickly as possible through a liquid or gas

例句 1 ： Streamlining cars increases their fuel efficiency.

例句 2 ： The bodies of dolphins are more streamlined than those of porpoises.

B. to improve the effectiveness of an organization such as a business or government, often by making the way activitiesare performed simpler

例句 1 ： They say things should be better now that they have streamlined application procedures.

例句 2 ： They're making efforts to streamline their normally cumbersome bureaucracy. 

8. absence (N.)：

A. the fact of not being where you are usually expected to be.

例句 1 ： A new manager was appointed during her absence.

例句 2 ： In the absence of care, finish yourself off.

B. the fact of not existing.

例句 1 ： Eleanor would later blame her mother-in-law for her husband's frequent absences. 

例句 2 ： I suspect he isn't altogether unhappy about my absence. 

9. presence (N.)：

A. the fact that someone or something is in a place.

例句 1 ： Her Majesty later honoured the Headmaster with her presence at lunch. 

例句 2 ： The document was signed in the presence of two witnesses.

B. a quality that makes people notice or admireyou, even when you are not speaking

例句 1 ： Hendrix's stage presence appealed to thousands of teenage rebels.

例句 2 ： He stood there in the corner of the room, a dark, brooding presence.