0 If a ship or a boat is unsinkable, it cannot be sunk. -- (船)不会下沉的
1 full of energy and enthusiasm, and not able to be defeated or to fail -- 充满活力的,不可战胜的
She was staying with her grandmother, the unsinkable Olga. 她跟人称“常青奥尔加”的奶奶住在一起。
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
再长的路,一步步也能走完,再短的路,不迈开双脚也无法到达。