Eustele
n. [植]真中柱( 存在于大多数裸子植物和被子植物的茎内)
🗣️ 情景例句
No, I'm sorry. This is our rock-bottom price.
很抱歉，这是我们的最低价格。
A miss is as good as a mile.
失之毫厘，差之千里。
Suddenly, they heard a voice behind them.
突然他们听到身后有声音。