A command between back ticks runs as the shell interprets the command line, and the output of the command is used in the finalexpansion.
在Shell对命令行进行解释时，将执行反勾号之间的命令，并在最终的扩展结果中使用该命令的输出。
2
In the final phase, the floating elements eventually moor into the seabed to reduce additional erosion. This system establishes a local restoration and expansion of the mangrove forest.
在最后阶段，漂浮元素将最终沉入海底，以减少额外的侵蚀。该系统建立了红树林的局部恢复和扩展工作。
3
The longer of expansion period, the smaller of dam center's maximum thermal stress; and the final residual thermal stress, which can benefit the concrete's anti-cracking quality.