名詞 am:

1. a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
   同義詞：americium, atomic number 95
2. a master's degree in arts and sciences
   同義詞：Master of Arts, MA, Artium Magister
3. modulation of the amplitude of the (radio) carrier wave
   同義詞：amplitude modulation

動詞 be:

1. have the quality of being; (copula, used with an adjective or a predicate noun)
   同義詞：be
2. be identical to; be someone or something
   同義詞：be
3. occupy a certain position or area; be somewhere
   同義詞：be
4. have an existence, be extant
   同義詞：exist, be
5. happen, occur, take place
   同義詞：be
6. be identical or equivalent to
   同義詞：equal, be
7. form or compose
   同義詞：constitute, represent, make up, comprise, be
8. work in a specific place, with a specific subject, or in a specific function
   同義詞：be, follow
9. represent, as of a character on stage
   同義詞：embody, be, personify
10. spend or use time
    同義詞：be
11. have life, be alive
    同義詞：be, live
12. to remain unmolested, undisturbed, or uninterrupted -- used only in infinitive form
    同義詞：be
13. be priced at
    同義詞：cost, be

1. I am filled with desire to go back home.
   我心中充滿了回家的渴望。
2. I am a doctor.
   我是個醫(yī)生。
3. I think I am quite a patient person.
   我認(rèn)為我是一個相當(dāng)有耐心的人。
4. Splash-down is scheduled for 5.30 am.
   航天器的預(yù)定濺落時間為上午5時30分。
5. No, you can't. I am sure.
   是的，您絕對做不到。
6. I am a Clark Gable nut: I have seen all his films.
   我是克拉克·蓋博的影迷，我看過他演的所有影片。
7. `Are you tired?' `Yes, I am a bit (tired).'
   ｀你累了嗎?＇｀是的，我有點(diǎn)兒(累).＇
8. I am more than twice as old as he.
   我的年齡是他的兩倍還不止。

AM
abbr.（略語）
amplitude modulation
amplitude modulation
Latin artium magister [Master of Arts]
【拉丁語】 artium magister[Master of Arts]