英和和英

名詞

M1 (countable and uncountable, plural M1s)

1. (US, money supply) The amount of cash in circulation plus the amount in bank accounts.
2. (mathematics) The number two, as the first Mersenne prime.
3. (computing) Apple M1, a system on a chip designed by Apple which was introduced in 2020.
4. (Should we delete this sense?) (road transport) A motorway number; notably the M1 Motorway in England.
5. (firearms) A semi-automatic rifle that was the service rifle of the U.S. Army during World War II and the Korean War.

参考

• M0
• M2
• M3

名詞

M-1 (plural M-1s)

1. The Garand semiautomatic rifle, also named the United States Rifle, Caliber .30, M1.
   • 2023 February 20, Tim Lister, “After nearly one year of war, how Ukraine defied the odds — and may still defeat Russia”, in CNN‎:

     Leopard 2s, Challengers and Abrams M-1s have been earmarked for Ukraine and are vastly superior to the Russian main battle tanks.

2. (US) A student visa for vocational and technical education.
   • 2025 May 22, Emma Tucker, Elizabeth Wolfe, “A judge temporarily halted DHS’s ban on Harvard’s ability to enroll international students. Here’s what to know”, in CNN‎:

     Educational institutions are required to have SEVP certification with US Immigration and Customs Enforcement in order to admit applicants who have an F-1 or M-1 student visa.

Further reading

• M-1 visa on Wikipedia.Wikipedia