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- 当顶花花冠露出与花萼等长时,大孢子母细胞经减数分裂形成四个直线排列的大孢子。When the flower buds separated and corolla facrogenous, flowers appeared and the megasporocyte formed.
- 英国大使起身为英王祝酒:“吾王乔治三世,您如骄阳当顶,华光四射,普照大地!”The British Ambassador also stood up to toast the British monarch::"Our sovereign His Majesty King George the Third is like the sun over our heads,sending its rays across the length and breadth of the earth!"
- 顶most
- 当心to take care
- 当家manage household affairs
- 头顶vertex
- 当下instantly
- 机顶盒set-top box
- 当归angelica
- 当真take seriously
- 顶杆mandril
- 顶上的top
- 当事concerned; involved
- 顶面superface
- 当道be in power
- 顶起jack-up
- 当街facing the street
- 顶风head wind
- 当回事take
- 穹顶dome