Bivalent segmer
[机] 二价链节
🧩 词语组成解析
a. 二价的\\n[化] 二价的
链段
🗣️ 情景例句
That's all right, Susan.
没有错， Susan。
We'll drink your health.
我们为您的健康干杯。
If we remain inveterate smokers, it is only because we have so often experienced the frustration that results from failure.
如果我们烟瘾大，戒不掉，那是因为屡戒屡败，失去信心。