Scientists then took two pairs of attached beads, one pair glued together and the other separable, and demonstrated that both pairs activated the machine when laid on the box.

接着，科学家们拿出两对附着一起的珠子，一对儿用胶水粘在一起，另一对儿是可分开的，并演示这两对儿放在盒子上时都可引发机关。

youdao

There were secretly two balls, one in each box, and we had decided in advance whether the children were going to get it "right" or "wrong" on each of the four guessing trials.

每个盒子里其实都有一个球，而我们会事先决定孩子们在四次尝试中的每一次会猜错还是猜对。

youdao

Think of a combo box that has two choices, one that hides the div and that one shows the div.

比如一个具有两个选项的组合框，一个选项是隐藏 div，一个选项是显示此 div。

youdao

This is a longer way of saying I think it would be hard to put just anybody in a box, for two years of service, in one neat box so quickly.

WHITEHOUSE: Press Briefing

Cable television may have 500 channels to pick from, but chances are excellent that only one of two companies makes your set-top box: Motorola or Scientific-Atlanta.

FORBES: Sony busts up the powerful cable-box duopoly.

Lafferty jinked by three players on the edge of the box and played a one-two with Brunt before firing a crisp low shot into the bottom corner from 20 yards.

BBC: Euro 2012 qualifier: Faroe Islands 1-1 N Ireland