Rather than kick up and down, try to snap your feet down and inward.

不要上下打腿，而是尝试同时向下向内打腿。

youdao

Dancers have to be very fit because they jump very high and kick their legs up and down.

舞者必须非常健康，因为他们需要跳得很高，并上下踢腿。

youdao

For my own amusement, I shuffle them up and down the top-five hierarchy, and sometimes kick one out for a new friend, only to have to put them back in when I remember that you can't make old friends.

作为我自己的消遣习惯，我会经常将他们前五名的顺序上下打乱，偶尔还会为了新交上的朋友而不得不将他们之中的某个踢出，之后却又将他们安插回来，因为我知道我是永远不会交上老朋友的。

youdao

Okay, you can kick up and down, that's true. Okay, that's true actually, that's true.

你可以选择罚球的高度,这一点很对,很有道路

耶鲁公开课 - 博弈论课程节选

Chris Nero then plucked another Deacon kick out of the air and touched down before a flare-up on 63 minutes saw Terry Newton accuse Stanley Gene of biting him.

BBC: Bradford 42-18 Hull KR

Lampard stepped up to take the spot-kick but Sorensen got down to his left and held the England man's soft, side-footed effort - making it a third penalty miss in a row for the midfielder.

BBC: Chelsea 2-0 Stoke

London Irish winger Sailosi Tagicakibau fielded Jackson's kick inside his own half and attacked up the left, creating space for Hewat to escape down the flank.

BBC: Saracens 16-13 London Irish