Děng / rén / yuán / dào / qí / cái / liào / sòng / dào / yǐ / hòu / shí / yàn / jiù / yí / qiè / jiù / xù / le

等人员到齐、材料送到以后，实验就一切就绪了。

Once everyone arrived and the materials were delivered, the experiment was completely ready to begin.