1. 释义
used to say that you think something is probably true
e.g. The restaurant that has been around for many years recently went out of business, presumably because the rent prices went up too much.
2. 用法
副词，“大概，可能”
e.g. The forth quarter of 2018 saw massive lay-offs in many technology companies, which, according to analysts, presumably means they failed to raise the funds they needed.
3. 翻译&造句
（1）翻译：教授的航班又晚点了，大概是恶劣的天气所致吧。
The professor's flight was late again, presumably because of the bad weather.
参考：The professor's flight was delayed again, presumably because of the bad weather.
Presumably, the bad weather delayed the professor's flight.
(2)造句：他昨晚上很晚才睡，可能是在赶论文。
He stayed up late last night, presumably because of his paper.
