Part One. The Old Buccaneer
Chapter I - The Old Sea-dog at the ‘Admiral Benbow’
Squire Trelawney, Dr. Livesey, and the rest of these gentlemen having asked me to write down the whole particulars about Treasure Island, from the beginning to the end, keeping nothing back but the bearings of the island, and that only because there is still treasure not yet lifted1, I take up my pen in the year of grace 17,——and go back to the time when my father kept2 the Admiral Benbow inn and the brown old seaman with the sabre cut first took up his lodging under our roof.
take up: to continue sth that sb else has not finished, or that has not been mentioned for some time 继续（他人未完成的事）；接着讲（以前提过的事）
She took up the story where Tim had left off.
她接着讲蒂姆未讲完的故事。
I’d like to take up the point you raised earlier.
我想继续谈一谈你早些时候提出的问题。
to start or begin sth such as a job 开始从事
He takes up his duties next week.
他下周就要开始履行职责。
Link to originalIf you get on with something, you continue doing it or start doing it. [V P with n] [V P]
Jane got on with her work…
简继续干她的工作。
Let’s get on.
我们开始干吧。