1. on an even keel : 平稳地；

2. keel over : 倾覆；

1. The sailboat keeled over in the storm.
    帆船在风暴中倾覆了。

2. She keeled over in a faint.
    他昏倒在地。

3. The structure had keeled over in the high winds.
    那座建筑物在大风中倒塌。

4. keel

4. The boat pitched suddenly and keeled over.
    船突然上下颠簸，接着就倾覆了。

1. The keel of the boat was made of steel.
    这船的龙骨是钢制的。

1. (船)龙骨：预计新合约将对集团的财报表起正面影响. 此外,根据合约,集团也获另一项价值约1800万美元的选择权协议,与FugroNV建造另一艘测量船. 行使期限为FugroEquator测量船安放船龙骨(Keel)的90天内或FugroEquator合约签署的6个月内.

2. 龙骨,脊：胸骨滑囊(sternal bursa)可能会充满干酪状物质,这是由于鸟儿无法行走而靠在龙骨脊(keel)上带来的结果成功地传播需要近距离接触,支原体(mycoplasmosis)很容易成为鸟舍中的一个问题.

3. 红印色：Joining stencil mark 搭头印(手工印花疵点) | Keel 红印色 | Marking off 搭色

1. （船的）龙骨
    The keel of a boat is the long, specially shaped piece of wood or steel along the bottom of it.

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2. 平稳进行；顺顺当当
    If you say that someone or something is on an even keel, you mean that they are working or progressing smoothly and steadily, without any sudden changes.

    e.g. Jason had helped him out with a series of loans, until he could get back on an even keel.
           贾森接连借了几笔钱给他，在他重新走上正轨之前帮他渡过了难关。

相关词组：keel over

1. one of the main longitudinal beams (or plates) of the hull of a vessel
    can extend vertically into the water to provide lateral stability

2. the median ridge on the breastbone of birds that fly

3. a projection or ridge that suggests a keel

1. walk as if unable to control one''s movements

    e.g. The drunken man staggered into the room

    Synonym: staggerreellurchswagcareen