名詞 oceania:

1. a large group of islands in the south Pacific including Melanesia and Micronesia and Polynesia (and sometimes Australasia and the Malay Archipelago)
   同義詞：Oceanica

1. Oceania is a separate landmass, but it is separated from Asia by very shallow water.
   大洋洲是一塊單獨(dú)的陸地，但它與亞洲之間只隔著很淺的水域。
2. A division of Oceania in the western Pacific Ocean comprising the islands east of the Philippines and north of the equator. It includes the Caroline, Marshall, Mariana, and Gilbert islands.
   密克羅尼西亞西太平洋上菲律賓群島以東，赤道以北的島群，是大洋洲的一部分，包括加羅林群島，馬紹爾群島，馬里亞納群島和吉爾伯特群島
3. Is Australia part of Oceania?
   澳大利亞是在大洋洲嗎？

O.ce.an.i.a

NONE（無詞性）
The islands of the southern, western, and central Pacific Ocean, including Melanesia, Micronesia, and Polynesia. The term is sometimes extended to encompass Australia, New Zealand, and the Malay Archipelago.
大洋洲：南部、西部及中部太平洋上的島嶼，包括美拉尼西克、麥克羅尼西克和波利尼西亞。這個(gè)詞有時(shí)也擴(kuò)展到包括澳大利亞、新西蘭及馬來群島

【引伸】
O.cean.ian
adj.（形容詞）
n.（名詞）