例句： The book was translated without the sanction of the author.

例句： The disorder in military policy had its origins in Truman's first term.

例句： The pilot landed the plane safely.

例句： Politics can be an explosive subject.

例句： The sky slowly changed from blue to red.

例句： The emery is a hard metallic substance.

例句： I perceived his comment as a challenge.

例句： Many people say that detente is now a dead letter.

例句： This point has been dealt with in the preceding paragraph.

例句： Wealth and poverty exist in every demographic category