美媒：美国商业航空系统失灵了

This pattern means 'no matter...' and shows that the result does not change under different conditions. It is often used to express something that is always true regardless of time, place, person, or situation.

由于 is a formal written connector used to introduce a reason or cause. It is common in news reports, academic writing, and formal explanation. It is similar to 因为, but more formal.

This pattern marks a range, often in time, place, number, or scope. In the text it is used to show a time span from one year to another.

This pattern introduces the perspective or viewpoint of a person or group. It means 'for someone' or 'from the perspective of someone.'

而 and 则 are often used in formal Chinese to mark contrast, comparison, or a shift in focus between two related ideas. Together they create a strong written style and highlight that the second part is different or especially noteworthy.