keep to keep abreast of (with) to keep good time to keep one's legs to keep open...
feet [fut] danh từ, số nhiều feet chân, bàn chân (người, thú...) bước...
Câu ví dụ
blowing from the North so strong that one could hardly keep one's feet mệt không cất nhắc nổi chân tay to be so tired that one can hardly lift one's limbs
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