The book gives handy hints on looking after indoor plants.

这本书提供了一些关于如何照料室内花草的有用信息。

Credit cards can be handy — they mean you do not have to carry large sums of cash.

信用卡很方便，有了它你就不用携带大量现金了。

That key will come in handy if you lock yourself out.

要是你把自己锁在了屋外，那把钥匙就派上用场了。

The $20 check came in very handy.

那张20美元的支票正好派上了用场。

It would be good to have a pencil and paper handy.

最好在手边准备好纸和笔。

Keep handy a lightweight sweater or cardigan.

手边备一件薄的套头毛衣或开襟毛衫。

This lively town is handy for Londoners.

这个热闹的小城离伦敦很近。

If you're handy with a needle you could brighten up your sweater with daisies. [+ with]

如果你针线活做得好，可以在自己的毛衣上绣几朵雏菊做点缀。