by day

by day的音标是[baɪ daɪ]，基本翻译是“日复一日地，在白天”。速记技巧是将其拆分为单词元素并使用联想记忆法，可以记为“白天不要拜，拜（拜）了一天，晚上才有时间”。

by day这个词的词源可以追溯到古英语by-，意思是“在旁边”或“在…旁边”，加上day，表示“在白天”或“在一天中”。

by day的变化形式有复数形式by days，还有过去式和过去分词by day。

相关单词有：daylight、everyday、non-stop day、daily、sunlight、midday、noonday、middaytime、daybreak。

例如，daylight指的是“日光”或“白天”，强调白天的光线；everyday指的是“日常的”或“平常的”，强调每天都会发生的事情。

这些单词都与by day这个短语有直接或间接的联系，体现了英语单词的多样性和灵活性。

常用短语：

1. by daylight 日光明亮处

2. by daybreak 在黎明时分

3. by daylight alone 仅凭日光

4. by daylight one"s eyes 目光锐利

5. by day and night 日日夜夜

6. by daybreak and sunset 黎明和日落

7. by day and by night 白天和黑夜

例句：

1. I often watch birds by daylight, observing their behavior and movements.

2. She is a skilled hunter who can track prey by day and night.

3. The sunrise was beautiful, and I took a photo by daybreak.

4. His eyes were sharp by daylight alone.

5. They worked by day and night to complete the project on time.

6. The couple traveled by day and enjoyed the scenery at night.

7. The storm lasted for days, with heavy rain and winds by day and clear skies at night.

英文小作文：

标题：Day and Night Life

Day and night life is a unique experience that we all enjoy, whether we are at home or on vacation. During the daytime, we can enjoy the sunshine and the fresh air, while at night we can gaze at the stars and enjoy the peace and quiet of the nighttime world.

However, day and night life also brings different challenges and responsibilities. During the daytime, we have to deal with work and school commitments, while at night we need to rest and recover our energy for the next day. We also need to take care of our health, which requires us to follow a healthy diet and exercise routine that is suitable for our body type and lifestyle.

In conclusion, day and night life is an essential part of our lives that we should cherish and appreciate. We should also learn to balance our work, rest, and leisure time to ensure that we are able to maintain our physical and mental health and well-being.