| 词汇 | hardening |
| 释义 | harden offTo systematically expose a young plant to outdoor conditions so that it adapts well when moved outside permanently. A noun or pronoun can be used between "harden" and "off." That delicate plant won't survive outside unless you harden it off first. harden up1. To cause something to become physically harder or more solid. In this usage, a noun or pronoun is used between "harden" and "up." The tub of ice cream was melting, so I stuck it in the freezer to harden it up. 2. To become physically harder or more solid. If the ice cream is melting, stick it in the freezer for a bit so it hardens up. harden something offto accustom a young plant to normal weather so it can be moved from a protected environment to the out-of-doors. We put the plants by the open window to harden them off. We hardened off the plants. harden something upto make something hard or strong. Put the meat in the freezer awhile to harden it up before you try to slice it thin. Harden up the ice cream a little in the freezer. |
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