Alternatives
n. 选择的余地( alternative的复数形式 ); 可供选择的事物; 取舍; 非传统（或他择性）生活方式的追随者（或鼓吹者）
🗣️ 情景例句
Why not?
有何不可？
He told me to take these pills every four hours.
他告诉了我每4小时吃一次这些药片。
it was not long before its use as the uniquely recognizable broadcasting frequency for interstellar communication was suggested.
提出把它作为星际间唯一可辨认的广播频率就为期不远了。