be plain sailingEASYto be very easy to do or achieve 一帆风顺，非常顺利 If you can answer the first question, the rest of the test should be plain sailing. 如果你能答出测验的第一题，其余的题目就都是小菜一碟了。
be plain sailing• Get the mitres right and the rest is plain sailing.• I recognized that all would not be plain sailing.• In any event, it will not be plain sailing.• Roderick Conway Morris says it's not going to be plain sailing.
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