add to the collection 增加收藏
add to the total 总数增加
add to the confusion 增加混乱
add to the difficulty 增加难度
add to the joy 增添喜悦
A: The heavy rain is making the commute even harder.
A：大雨让通勤变得更加困难了。
B: Yes, it really adds to the difficulty of traveling today.
B：是的，这确实增加了今天的出行难度。
1) 增加某物的数量或程度
2) 补充或添置
3) 使情况恶化或加重
4) 增强某种感觉或情感
5) 扩展原有的规模
1. 增加；使增加
2. 补充；添补
verb
1. to increase the amount, degree, or intensity of something
2. to make something more intense or serious
Synonym: increase, augment, intensify