Examples

the future in English is a compound tense involving the use of such auxiliary verbs as ``shall'' and ``will''

x⁴ + x + 3 and xyz² are of the fourth degree

``Sally'' is a hypocorism for ``Sarah''

3 ± 2 2 are conjugate algebraic numbers, being roots of x² -- 6x + 1

b² -- 4ac is the discriminant of ax² + bx + c = 0

When I can't fall asleep I don't take pills, I prefer to read a book, it helps me.

我睡不着时不会吃药，而是喜欢读书，这对我更有帮助。

Once I didn't believe in acupuncture, but after I tried I found out that it really works.

以前我不相信针灸，但试过一次之后发现确实有效。

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