✅ 同义词
🗣️ 情景例句
By the way, how is your wife doing, Harrison?
顺便问一下，贵夫人近来可好吗？
By the side of sickness health becomes sweet.
和疾病相比较，才显得健康的可贵。
I was standing at the back, so I couldn't see very well.
我站在后面，看不清。