Pentacarbonyl
五羰基
🗣️ 情景例句
Maybe I can help. Tell me what it is, Susan.
也许我能帮忙。说给我听听 ，Susan。
Don't look down on others!
别瞧不起人了。
I'd say about half of the shipment is unusable.
我看大概有一半的货不能用了。