Abstractarray
抽象數組
??? 情景例句
We should.
我們應該如此。
Better wear out than rust out.
與其閑散不如忙碌。
Those planning a trip to remote areas, or intending to live in countries where drinking water is not readily available, should know about the various possible methods for making water safe.
那些計劃去偏遠地區旅行，或在飲用水不現成的國家居住的人，應該知道如何使水適于飲用的各種辦法。