Melena vera
[医] │真性黑粪症
🧩 词语组成解析
n. [医]黑粪症
abbr. 通用实验性反应堆装置（Versatile Experimental Reactor Assembly ）
🗣️ 情景例句
And guess what?
你们猜怎么着？
I said, Do you need any help?
我是说:你需要帮忙吗？"
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.
那些计划去偏远地区旅行，或在饮用水不现成的国家居住的人，应该知道如何使水适于饮用的各种办法。