He shakes his head at the thought of this one thing , this single hideous bead on the necklace of his life .
他一边思索着这件事一边摇着他的头,他生活的项链上唯独可怕的一颗珠子。
Scientists will use the world 's most powerful laser to create 192 separate beams of light that will be directed at a bead of frozen hydrogen in a violent burst lasting five billionths of a second
In general , two forms of combinatorial library synthesis exist , " liquid-phase " synthesis and " solid-phase " synthesis ; in the latter the chemistries are performed with one or more of the reagents attached to an inert solid support such as a bead or column .