We'll have to double up on books; there aren't enough to go around.
因为书不够人手一册，我们只好合用了。
He scarcely earns enough to keep himself and his family.
他挣的`钱几乎不够养活他自己和家人。
Our plans need to be flexible enough to cater for the needs of everyone.
我们的计划必须能够变通，以满足每个人的需要。
I was stupid enough to believe him.
我可真够糊涂的，竟然相信他的话。
I wouldn't get involved ─ he's old enough to fight his own battles.
我不想参与——他已经长大，能独自应付了。