for all seasons

suitable in or appropriate for every kind of weather

四季皆宜的

a coat for all seasons.

四季皆宜的外套。

season's greetings

used as an expression of goodwill at Christmas or the New Year

致以節日的問候（圣誕或新年時的問候語）

in season

Available or ready for eating or other use.

當令的：現成的或準備食用或其它用途的

Legally permitted to be caught or hunted during a specified period.

獵捕期的：法律上允許在某一持定時期內可進行獵捕的

At the right moment; opportunely.

及時的：在合適時間的；碰巧的

In heat. Used of animals.

發情中。用于動物

out of season

Not available, permitted, or ready to be eaten, caught, or hunted.

不當令的：不現成的、不被允許的或尚不能吃、抓或獵捕的

Not at the right or proper moment; inopportunely.

不合時宜的：不在合適的或正確的時間的；不湊巧的