- to be kept upright
- 必须: must; have to; be obliged to ...
- 竖: vertical; upright; perpendic ...
- 放: release; set free; let go
- 竖放: keeupright; stow on end
- 必须: must; have to; be obliged to ; necessary 必须指出 it must be pointed out that ...; 我们必须服从命令。 we must obey orders. 你必须按时到达那里。 you must be there on time. 我们必须马上出发。 we must start at once
下载手机词典可随时随地查词查翻译