Tenthly one should pour tea into the cup first .

第 十，应该先在杯中放茶水。

And tenthly comparative benefits of planting grain is low . and for T-N and T-P are quite low .

九、粮食生产比较效益低。对T-N和T-P的去除效果较差。

And tenthly comparative benefits of planting grain is low .

九、粮食生产比较效益低。