so that we don't have to worry about any structural problems.
我们就可以不用担心任何结构上的问题。
All produets have to go through five checks in the whole process.
所有产品在整个生产过程中得通过五道质量检查关。
Officials used to have trouble with the foreign names of people passing through Ellis Island, and because they were so busy, many people's names got changed in the rush.