They focus properly, and are as easy to use as opening a bottle of water.
它们能正确对焦，简单得就像你打开一瓶子水一样。
'Water' will be a key element of the opening ceremony.
水将成为本次开幕式的关键元素。
A small cistern was dug beneath this opening to hold rain water.
在下面找到一个小贮水器接雨水。
Water from the sea comes through this opening into San Francisco Bay.
水从大海通过这条通道流入旧金山湾。
Through opening water surface of park it could solve urban waterlogging.
通过开辟公园水面解决城市排涝；
Through opening water surface of park it could solve urban waterlogging.
通过开辟公园水面解决城市排涝；
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