life jacket是什么意思

双语用例

• He did have some success a few years later in 1722 when he patented his "swimming engine," a life jacket that obtained buoyancy with iron cylinders.

• Even wearing the life jacket scared me.

• The life jacket is a bit bulkier than that.

• The criticism may refer to the problem with wearing a life jacket when flying.

• One of the survivors has specifically stated in his account of his experiences, that he wore a life jacket.

• When a man falls overboard, unconscious or otherwise, this new life jacket will automatically inflate.

• This is a life jacket which will enable the education service to expand in different directions as the need shows itself.

• Many fishermen have been lost overboard because they were not wearing a life jacket.