dam

ダム、堰

川を横切るように造り、水をためたり流れを調節したりする丈夫な壁。

やさしい英語で： A strong wall across a river that holds back or controls the water.

• They built a dam across the river.
• The dam supplies water to nearby farms.
• Heavy rain damaged two dams last year.

類義語： barrier

よく使う表現： build a dam, hydroelectric dam

ダム湖

川の流れをせき止める壁の後ろに、水がたまってできた湖。

やさしい英語で： A lake formed by a wall that stops water flowing along a river.

• They went fishing on the dam.
• Heavy rain raised the water level in the dam.
• Boats gathered near the edge of the dam.

類義語： reservoir

よく使う表現： on the dam, dam water

遮断膜、ラバーダム

特に歯科治療で、ある部分に液体が入らないようにする膜や仕切り。

やさしい英語で： A barrier that keeps liquid away from an area, especially during dental treatment.

• The dentist used a rubber dam.
• This dam keeps saliva away from the tooth.
• She removed the dental dam after treatment.

類義語： barrier

よく使う表現： dental dam, rubber dam

せき止める

水の通り道に仕切りを造り、流れを止めること。

やさしい英語で： To stop water flowing by building a barrier across its path.

• Beavers dam small streams.
• They dammed the river to create a lake.
• Should we dam this channel?

類義語： block

よく使う表現： dam a river, dam a stream