单词see-saw
n.: 跷跷板；拉锯局面（指来回往复，起伏不断）
v.: （局势、意见、感情等）摇摆不定
网络: 跷跷板式；看见；跷跷板技术
跷跷板:
a piece of equipment for children to play on consisting of a long flat piece of wood that is supported in the middle. A child sits at each end and makes the see-saw move up and down.
拉锯局面（指来回往复，起伏不断）:
a situation in which things keep changing from one state to another and back again
（局势、意见、感情等）摇摆不定，不断反复，交替:
to keep changing from one situation, opinion, emotion, etc. to another and back again
上下运动的
Being a man, he won"t have the energy to see-saw between frosty relationships both at home and in the office for long.
作为一个男人，他不会长期有精力周旋在家庭和办公室的冷战中。
Relationships between writers and publishers are of course very strange and change all the time, rather like a see-saw.
作家和出版社之间的关系自然是很奇怪的，并且总在变化中，就像一个跷跷板。
Another kind of agent works on the other end of the bone metabolism see-saw: it promotes the creation of new bone.
另外它还作用在骨代谢的另一端：促进新骨的创建。
The see-saw drama of it was enthralling before we emerged 4-3 winners and naturally, being a local derby, there was controversy.
跌宕起伏的比赛很吸引人，最后我们4-3获胜。当然，作为一场本地德比还是有很多争议。
In terms of your emotional state, I remember a see-saw of panic and terror.
涉及到情绪状况，我记得是摇摆于惊慌与恐惧之间。
But he will see the value of his money or land go up and down like a see saw.
在这个过程中他只会看到他的钱或者土地升值或者贬值。
Alongside him, Alonso nodded agreement. The rest of the 2006 season looks set to be a see-saw ride for them both.
阿隆索对此也表示了同意。对于他们来说，2006赛季似乎注定要成为一场拉锯战。
Mr Zhang"s company, Rongsheng, has seen its share price see-saw since it listed in November, underlining the uncertainty the sector faces.
张志熔的熔盛重工自从去年11月上市以后，股价一直在拉锯之中，突显出造船业面临的不确定性。
Simply by using your finger right here, it"s like a little see-saw.
只要把手指放在这里，就像是跷跷板一样。
To your right will be a see-saw with beanie caps sitting at each end.
在你的右边会有一个两端各有一个小帽子的跷跷板。