Generalized transportation problem can't be solved by tableworking method.
广义运输问题不能用运输问题的表上作业法进行求解。
2
His father sat at the big kitchen tableworking on a fishing net . dora was at the kitchen stove ready to serve dinner as reuben took his place at the table.
父亲正坐在厨房大饭桌旁摆弄渔网，母亲多拉在厨房炉边忙碌着，准备开饭。 鲁本就在桌旁坐下了。
3
It's not uncommon to find your tray table broken, the in-flight entertainment system not working and your seat cushion worn.