发球是网球中最重要的击球。
"The serve is the most important shot in tennis."
每个人都有属于自己的故事。
高分子物质的性质不仅取决于其构建单元的性质,还取决于这些单元在空间中的排列方式。
Safety is not just a policy, it's a culture that must be embedded in every operation we undertake.
Leadership is not about being in charge. It’s about taking care of those in your charge.