n. 汽笛( siren的复数形式 ); 妖冶而危险的女人; 危险的诱惑; 塞壬(古希腊传说中半人半鸟的女海妖, 惯以美妙的歌声引诱水手, 使他们的船只或触礁或驶入危险水域)
🗣️ 情景例句
He had a great capacity for learning.
他的学习能力很强。
There are seven of us altogether.
一共有7个。
Despite the fact that the bottle is tinted a delicate shade of green, an observant visitor would soon notice that it is filled with what looks like a thick, grayish substance.