当物质和反物质相遇时，它们就会自动湮灭，并在强大的爆炸中把它们的质量转换成能量。

When matter and antimatter meet, they annihilate, converting their mass into energy in a powerful explosion.

youdao

这是真的，当物质和反物质相遇时，它们会在大爆炸相互湮灭，然后把它们的质量转换为能量。

It's true that when matter and antimatter meet, they do annihilate in a big explosion and convert their mass to energy.

youdao

物理学家们做的这些事的本质就是尽可能让这些对撞充满能量并且高效以使这些粒子的质量转换为纯能量（这是爱因斯坦颠补不破的方程E=mc2的结果）。

What physicists are basically doing is making the collisions as powerful and as efficient as possible to turn particle mass into pure energy (as a result of Einstein's bedrock equation E=mc2).

youdao

This spring is getting squashed on either side, and it'll squash by certain amount x, that depends on your mass, and that x will be turned into a motion of a needle and that'll read your mass.

这个弹簧两边都会受到压缩,压缩量为 x,它由你的质量决定,x 会转换成指针的运动,你从而可以读数

耶鲁公开课 - 基础物理课程节选