It's best to read such execution plans from the left-lowest operator in the tree, since the logical flow in the plan is from bottom to top and left to right.
因为执行计划中的逻辑流是自下而上、从左到右，所以看此类执行计划时，最好是从树中左下方的操作符开始。
2
In Uganda, where villages often have one top-up phone run by a trusted operator, a basic system helps store and transfer money.
在乌干达，每个村庄有一个充值电话，由可信的接线员管理，这一基本系统帮助人们存款或转帐。
3
Another of his firms is the top cell phone operator, and he wants to get into convergence services to offer television and interactive media.