把规则剪贴过来
Section VII—Restrictions Governing Jump Balls
a. Each jumper must have at least one foot on or inside that half of the
jumping circle which is farthest from his own basket. Each jumper must
have both feet within the restraining circle.
跳球员至少有一脚在远离己方篮框的半圈. 两只脚都要在圈内.
(换言之,可以有一只脚踏到对方跳球员所在的半圈)
b. The ball must be tapped by one or both of the players participating
in the jump ball after it reaches its highest point. If the ball falls
to the floor without being tapped by at least one of the jumpers, one
of the officials off the ball shall whistle the ball dead and signal
another toss.
如果球掉到地上前没人拍到,就重跳.
c. Neither jumper may tap the tossed ball before it reaches its highest
point.
球达到最高点后才能拍球.
d. Neither jumper may leave his half of the jumping circle until the
ball has been tapped.
球被拍到之前, 跳球员不得离开他的半圈.
(换言之,等球被拍到,跳球员就可以乱跑了)
e. Neither jumper may catch the tossed or tapped ball until it touches
one of the eight non-jumpers, the floor, the basket or the backboard.
跳球员在球碰到其他八人,地板等物之前，不能抓球.
（这边动词用catch, 应该是跟tap有区分.
而且跳球员本来就应该要能tap球才对
个人解读是可以拍球不能抓球)
f. Neither jumper is permitted to tap the ball more than twice on any
jump ball.
跳球员不能拍球超过两次.
g. The eight non-jumpers will remain outside the restraining circle
until the ball has been tapped. Teammates may not occupy adjacent
positions around the restraining circle if an opponent desires one
of the positions. No player may position himself immediately behind an
opponent on the restraining circle.
其他八人在球没被拍到之前不能入圈.
(换言之,球被拍到之后应该可以冲进去抢)
Penalty for c., d., e., f., g.: Ball awarded out-of-bounds to the opponent.
h. Player position on the restraining circle is determined by the direction
of a player’s basket. The player whose basket is nearest shall have first
choice of position, with positions being alternated thereafter.