In Thai language, 'ตามแต่ (dtaam tàe)' is used to show that something varies and depends upon certain conditions or situations. It expresses a meaning similar to 'depending on' or 'based on' in English. You can use it in various contexts to depict the variability of an action or state because of various influencing aspects. This term is flexible and can be used with several types of verbs, adjectives, and phrases to specify the contingency of an event or situation.