A man cannot whistle and drink at the same time.
一心不能二用.
A work ill done must be twice done.
未做好的事情,需要重新再做!
Better late than never.
迟做总比不做好.
Between two stools one falls to the ground.
脚踏两头要落空.
By the street of "Bye and bye" one arrives at the house of "Never".
迁延因循,一事无成.
He that doth most at once doth least.
想一次做完所有事,结果一件也做不完.
Draw not your bow till your arrow is fixed.
事未齐备,切莫妄动.
Do business, but be not a slave to it.
要做事,但不要做事情的奴隶.