nounB1
象牙
the hard white substance of an elephant's tusks
例文
The old piano keys were made of smooth white ivory.
その古いピアノの鍵盤は、なめらかな白い象牙でできていた。
象牙
the hard white substance of an elephant's tusks
例文
The old piano keys were made of smooth white ivory.
その古いピアノの鍵盤は、なめらかな白い象牙でできていた。