define ones role 确定自己的角色
The most interesting ones were outstanding men who were unwilling to accept the meek and passive role of the peasant.
最有趣的是那些杰出的人,他们不愿意接受温顺被动的农民角色。
Instead, the modules are able to choose wholly artificial primary keys — ones that isolate the uniqueness requirement while refusing any data-representation role.
模块能够选择完全人造的主键——在拒绝所有数据表示角色时分解出唯一性需求的那些主键。
The role of small, frequent fires in clearing out the undergrowth so that larger, tree-destroying ones will not eventually take hold is now understood.
零星、频繁的火灾清空了下层灌木丛以使得更大的、会毁坏树木的灌木不会壮大,它的这个角色已经被认识到了。
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