她不是伤残树皮下的树液，也不是悬在利爪下的翅膀。
It is not the SAP within the furrowed bark, nor a wing attached to a claw.
他能看到树皮下的甲虫，并把它毫发无伤地捉下来，放在放大镜下让我们看。
He could see the beetle under the bark, and draw it forth unharmed for us to squint at through the magnifying glass.
山松甲虫只寄生于成年树木，它的幼虫会通过取食树皮下的组织最终杀死树木。
The beetle attacks mature trees only; its larvae ultimately kill the tree by feeding under its bark.
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