Sumatra itself is part of an island arc.
苏门答腊岛本身就是岛弧的一部分。
First impressions of Sumatra are not good.
苏门答腊给我的第一印象并不好。
The new case is the first from Lampung Province on the island of Sumatra.
这是苏门答腊岛楠榜省第1例新病例。
The origin of that plant is unknown and is probably not from Sumatra.
这个品种的原产地不得而知，可能并不产自苏门答腊。
The origin of that plant is unknown and is probably not from Sumatra.
这个品种的原产地不得而知，可能并不产自苏门答腊。
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