Based on the above meanings I found, these are my translations:
Literal translation (直譯):
(1) It takes a decade of cultivation for two people to ride on the same boat. It takes a lifetime of cultivation for two people to share the same pillow.
(2) Riding on the same boat requires a decade of cultivation; whilst sharing the same pillow, a lifetime.
(3) A decade of cultivation to ride on the same boat. A lifetime of reincarnation to share the same pillow.
(4) A decade of cultivation to ride on the same boat. A lifetime of reincarnation to become a couple.
Fate brings us together as a couple, cherish every encounter and embrace the relationship.
Love and cherish the people with whom fate brings you together (as a couple).
2009-05-05 00:58:25 補充：
Sorry. Missing a comma after "whilst".
(2) Riding on the same boat requires a decade of cultivation; whilst, sharing the same pillow, a lifetime.
Riding on the same boat requires a decade of cultivation; whilst, sharing the same pillow, a century. (a very literal translation)
2009-05-16 19:17:14 補充：
I am seeing all the usuall susupects voting for the answer. There are still a few missing. Don't make it too obvious because we are reporting to Yahoo Management to find a way other than deducting the points of the sock-puppetry accounts. I will keep you updated on that.
2009-05-19 23:05:55 補充：
I did provide that information to Yahoo Management and am waiting for their response.
2009-05-30 00:52:14 補充：
I said I would keep you posted on the response from Yahoo Management regarding the usual suspects and the sock-puppet accounts I reported.
Good News! This is the response that I just got.
2009-05-30 00:53:59 補充：
I hope this will give others a lesson not to create sock puppet accounts to manipulate the votes.
If you see any suspicious sock puppet accounts manipulating votes, please let me know and I will report them to Yahoo Management. :)
2009-05-30 00:55:00 補充：
By the way, I don't know what Yahoo Management meant by "已根據規範處理". I will follow up with them.
2009-06-01 23:24:44 補充：
Thanks 杜鋅! Unfortunately I was hold hostiled by the person who I reported using sock puppet accounts to manipulate the votes. She has been going through all my answers in year 2009 (5 months of data in 2 days) and deleting them.
2009-06-01 23:26:32 補充：
I am pretty impressed with the amount of time she has. I know you are reading every word I write, so don't go too far. Don't force me to have to expose you and eight of your sock puppet accounts to the public.
2009-06-01 23:28:04 補充：
Try to make use of your time improving your English, rather than investing in retaliation by removing my best answers. Removing my answers will not help you in improving your English language ability.
2009-06-01 23:29:35 補充：
Sorry, a few typos.
make "good" use of your time.
2009-06-02 04:01:36 補充：
Sorry. Another typo.
Unfortunately, I was "held" hostage....
Myself. Went abroad at age 11. With 32 years experience speaking and writing English. Tutored English as an Undergrad. A project manager in the US since 1992.