The English meaning of 1 (completed action marker)2 (modal particle indicating change of state, situation now)3 (modal particle intensifying preceding clause)
The English meaning of 1 to finish2 to achieve3 variant of 瞭|了 (liǎo)4 to understand clearly
I found the key for which I had been looking.
Yesterday, he read the most interesting novel.
Three months is too short a time to finish the experiment.
This book is too difficult for you to read.
He boarded a plane bound for Los Angeles.
We took strong measures to prevent it.
He contrived a means of speaking to Nancy privately.
Don't forget to put a stamp on your letter.
The sight of fresh lobster gave me an appetite.
This means that others can only come to know you and like you by listening to what you say.
He gave me precise instructions to do the job.
My business has at last gotten on the right track.
His son died from cancer at a young age.
We won't go out unless it stops raining.
I discovered my father collected 30 years of newpapers.
This is the most beautiful sight that I have ever seen.
He quickly made friends with the new boy on the block.
It was Alice who went to the concert yesterday.
It was yesterday that Jake broke this window.