Sideroferrite

木化石中发现的天然铁

🗣️ 情景例句

I'm having some trouble keeping food down.
我吃东西时感到困难。
I'm afraid you will be too busy.
我怕你会太忙。
The meeting was scheduled for two hours, but it is not over yet.
会议原定了两个小时,不过现在还没有结束。
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