As a result, planes were kept in a holding pattern, sometimes three or four miles apart, until they were cleared to land.
结果，飞机均被保持在等待航线状态，有时相隔三四英里，直至它们得到降落指示。
I enjoyed playing the violin very much, and I didn't mind practicing, sometimes three or four hours a day.
我非常喜欢拉小提琴，我不介意练习，有时一天练三四个小时。
I had scrimped and saved to get at least two stickers a week - sometimes three if I had a little extra left over.
我省吃俭用，节衣缩食，争取每周得到两张以上的贴纸。有时如果有点额外盈余的话能拿到三张。
Saloons blossomed overnight, two and sometimes three in a block, and after nightfall the streets were full of drunken men, black and white, reeling from wall to curb and back again.
入夜之后，大街上到处都是醉汉，有黑人也有白人，摇摇晃晃地在人行道上跌跌撞撞。
In these regions, two and SOmetimes three harvests a year were normal, and SO the tempo of work was intense.
在这些地区，农民一般要种两季或三季，劳动强度非常大。
In these regions, two and SOmetimes three harvests a year were normal, and SO the tempo of work was intense.
在这些地区，农民一般要种两季或三季，劳动强度非常大。
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