给服务员、行李搬运工、导游和司机小费是惯例。It is usual to tip waiters, porters, guides and drivers.这些工作组将按惯例工作。These working parties will be going over well-trodden ground.这条惯例对我们不适用。The convention does not apply to us....
Biologists need to compare xerophyte and hydrophyte生物学家需要对比旱生植物和水生植物。Hydrophyte A plant found growing in water or in extremely wet areas.水生植物:是生长在水中或是极端潮湿的环境中的植物.A new type of ecological floating bed was developed that c...
His part in the affair was quite open and aboveboard.他参与这件事完全是正大光明的.I think everything ought to be aboveboard.我觉得什么事情都应当开诚布公.His business dealings were aboveboard.他的生意来往是光明正大的....